Scholars@Duke
Stefan M Goetz

Stefan M Goetz

Assistant Professor in Psychiatry and Behavioral Sciences
Psychiatry & Behavioral Sciences, Behavioral Medicine & Neurosciences
stefan.goetz@duke.edu
Dept. Psychiatry & Behavioral, Durham, NC 27710

Selected Publications

Control system for an underwater coded aperture miniature mass spectrometer

Journal Article Green Analytical Chemistry · June 1, 2025 In situ measurements of the spatiotemporal distribution of dissolved gases in the ocean are useful for a wide variety of applications including monitoring biogeochemical cycles (e.g., methane, oxygen, and carbon dioxide fluxes), detecting pollutants, study ... Full text Cite

Improvement of least mean square adaptive algorithm for non-monotonic systems

Journal Article Optics Express · February 10, 2025 This paper introduces the zlLMS algorithm, an improvement over the traditional least mean square (LMS) algorithm, addressing its limitations in handling nonlinear and non-monotonic transfer functions commonly encountered in engineering systems. The propose ... Full text Cite

A Zero Common Mode Voltage PWM Scheme With Minimum Zero-Sequence Circulating Current for Two-Parallel Three-Phase Two-Level Converters

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · January 1, 2025 This article introduces a pulse width modulation (PWM) scheme for both common mode voltage elimination and zero-sequence circulating current suppression. Our approach began with analyzing the relationship among basic vectors, common mode voltage eliminatio ... Full text Cite

Stability Design of Single-Loop Voltage Controller for Grid-Forming Inverters With Optimized LLCL Filter

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2025 Future more-electronic grids, with growing penetration of controlled switched-mode power supplies, are expected to need grid-forming inverters and related control techniques in renewable energy sources and energy storage systems. LC filters are typically u ... Full text Cite

Differential Detection of Feeder and Mesh Impedances Through a Series-Parallel Direct-Injection Soft Open Point

Journal Article IEEE Transactions on Power Electronics · January 1, 2025 The grid impedance is a crucial parameter for the operation of grid-tied converters and also maintaining voltage robustness of a grid segment. However, in meshed distribution grids, it is essential to separate the feeder impedance from the overall grid imp ... Full text Cite

Optimizing PV-Battery Hybrid Systems: A Reconfigurable Approach With Module-Level Maximum-Power-Point Tracking and Load Sharing

Journal Article IEEE Transactions on Power Electronics · January 1, 2025 This article presents a novel hybrid reconfigurable battery and photovoltaic (PV) system designed to meet the growing demand for efficient renewable energy sources. The system features a modular reconfigurable architecture with compact coupled inductors an ... Full text Cite

DC-to-5-MHz Wide-Output-Bandwidth High-Power High-Fidelity Converter

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2025 Advances in power electronics have made it possible to achieve high-power levels, e.g., reaching GW in grids, or alternatively high output bandwidths, e.g., beyond MHz in communications. Achieving both simultaneously, however, remains challenging. Various ... Full text Cite

Analytical Model and Planar Magnetic Solution for Parallelization Surges in Switched-Capacitor and Series/Parallel Multilevel Circuits

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2025 Cascaded multilevel converters are pivotal in various applications, including offshore wind energy, power transmission, large drives, or reconfigurable battery systems. Enabling parallel connectivity in these converters enhances their scalability and flexi ... Full text Cite

Asymmetrical Cascaded-Bridge Converter With Equal Modules and Sensorless Voltage Balancing for High-Quality Output

Journal Article IEEE Transactions on Power Electronics · January 1, 2025 The cascading of power modules can generate multilevel voltage output to enhance power transmission capacity and quality. However, conventional cascaded converters require an excessively large number of modules for high quality and precision due to the onl ... Full text Cite

Design and Analysis of Automatic Modulation and Demodulation Strategy in Wireless Power and Drive Transfer System

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2025 This article presents an innovative wireless power and drive transfer (WPDT) system with inherent modulation and demodulation functionality. For high-frequency alternating input voltage, which is conventionally used in wireless power transfer (WPT) systems ... Full text Cite

Linking Electric Vehicle Traffic and the Stationary Power System: Technology Needs and Economical Aspects

Journal Article IEEE Industrial Electronics Magazine · January 1, 2025 For more effective decarbonization and better utilization of the finite battery storage capacity of electric vehicles (EVs), dynamic energy exchange between cars and their batteries with the stationary electrical system could be a game changer. However, al ... Full text Cite

Highly Compact Charging with Power-Factor Correction for Electric Vehicles Through Functional Integration into a Dynamically Reconfigurable Battery

Journal Article IEEE Transactions on Transportation Electrification · January 1, 2025 Dynamically reconfigurable batteries in electric vehicles can improve overall battery as well as system performance. Furthermore, they can functionally integrate a variety of functions that previously required separate electronics to save space, mass, and ... Full text Cite

Omnidirectional Magnetic Resonant Extender Design for Underwater Wireless Charging System.

Journal Article IEEE J Emerg Sel Top Power Electron · August 2024 Long-range underwater wireless power transfer (WPT) systems have great application prospects in many industrial fields. However, conventional WPT systems may suffer different kinds of technical issues in this highly unstable operation environment, such as ... Full text Link to item Cite

Scalp surface estimation and head registration using sparse sampling and 3D statistical models.

Journal Article Comput Biol Med · August 2024 Registering the head and estimating the scalp surface are important for various biomedical procedures, including those using neuronavigation to localize brain stimulation or recording. However, neuronavigation systems rely on manually-identified fiducial h ... Full text Link to item Cite

Analysis and Improvement of Transient Voltage Stability for Grid-Forming Converters

Journal Article IEEE Transactions on Industrial Electronics · July 1, 2024 Grid-forming converters are gradually becoming the enablers of more-electronic power systems. However, the challenge of fault-ride through prevents the widespread adoption of grid-forming converters. Although the existing literature investigates active pow ... Full text Cite

Maximum Power Factor Tracking Technique for LCC-Capacitor Charging Power Supply Through Variable DC Link Voltage

Journal Article IEEE Transactions on Industrial Electronics · July 1, 2024 This article proposes a maximum power factor tracking (MPFT) technique for the LCC resonant converter which functions as a capacitor charging power supply. The proposed MPFT technique is achieved through variable dc-link voltage whose reference value can b ... Full text Cite

A Rapidly Reconfigurable DC Battery for Increasing Flexibility and Efficiency of Electric Vehicle Drive Trains

Journal Article IEEE Transactions on Transportation Electrification · June 1, 2024 Traditional electric vehicle (EV) battery drive trains comprise hard-wired batteries forming a fixed high-voltage dc link and a main inverter. This article proposes a novel topology to break hard-wired batteries into smaller subunits interfaced by low-volt ... Full text Cite

A Closed Formalism for Anatomy-Independent Projection and Optimization of Magnetic Stimulation Coils on Arbitrarily Shaped Surfaces.

Journal Article IEEE Trans Biomed Eng · June 2024 INTRODUCTION: Transcranial magnetic stimulation (TMS) is a popular method for the noninvasive stimulation of neurons in the brain. It has become a standard instrument in experimental brain research and has been approved for a range of diagnostic and therap ... Full text Link to item Cite

Comprehensive Multiple Indicators Optimizations for Two-Parallel Interleaved Three-Phase Two-Level Power Converters Using Optimal Vector Sequences

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · June 1, 2024 The comprehensive multiindicator optimization aims for an optimal trade-off among various critical indicators. This approach can effectively handle diverse scenarios and ensures stable performance by optimizing each indicator without significantly sacrific ... Full text Cite

Fault-Tolerant Multiparallel Three-Phase Two-Level Converters with Adaptive Hardware Reconfiguration

Journal Article IEEE Transactions on Power Electronics · April 1, 2024 This letter proposes a fault-tolerant multiparallel converter with adaptive hardware reconfiguration. The proposed topology maximizes open-switches' fault tolerance with minimal hardware redundancy, efficiently covering a broad spectrum of potential fault ... Full text Cite

Topology, Analysis, and Modulation Strategy of a Fully Controlled Modular Reconfigurable DC Battery Pack With Interconnected Output Ports for Electric Vehicles

Journal Article IEEE Transactions on Transportation Electrification · March 1, 2024 Modular battery-integrated converters or the so-called dynamically reconfigurable battery packs are expanding into emerging applications. Although they offer many degrees of freedom (DoFs), the state of the art focuses on single-output systems and neglects ... Full text Cite

Modulation-Enhanced Nearest-Level Quantization for a Wide Output Bandwidth.

Journal Article IEEE Trans Power Electron · March 2024 Multilevel converters have enabled various applications that are not possible with conventional two-level converters. Many of these applications, however, need a high output bandwidth, often approaching the switching rate limit of the transistors, with hig ... Full text Link to item Cite

Comments on "Identifiability Analysis and Noninvasive Online Estimation of the First-Order Neural Activation Dynamics in the Brain With Closed-Loop Transcranial Magnetic Stimulation".

Journal Article IEEE Trans Biomed Eng · February 2024 Presents corrections to the paper, (Identifiability Analysis and Noninvasive Online Estimation of the First-Order Neural Activation Dynamics in the Brain With Closed-Loop Transcranial Magnetic Stimulation). ... Full text Link to item Cite

Open-Switch Fault Tolerance Control of Two Parallel Interleaved Three-Phase Power Converters

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · February 1, 2024 This article introduces a novel open-switch tolerance control strategy for two parallel converters with an open-switch fault. Our detailed postfault modeling highlights the challenges: the open-switch fault inhibits vital commutations, and the centralized ... Full text Cite

Module Voltage and Resistance Estimation of Battery-Integrated Cascaded Converters Through Output Sensors Only for EV Applications

Journal Article IEEE Transactions on Transportation Electrification · January 1, 2024 Modular reconfigurable batteries are gaining significant traction in the electromobility sector, mainly due to better scalability to large capacities and the falling cost of electronic components. Despite their advantages over hard-wired battery packs, mod ... Full text Cite

Hacking Encrypted Frequency-Varying Wireless Power: Cyber-Security of Dynamic Charging

Journal Article IEEE Transactions on Energy Conversion · January 1, 2024 Recently, energy encryption for wireless power transfer (WPT) has been developed for energy safety, which is important in public places to suppress unauthorized energy extraction. Most techniques vary the frequency so that unauthorized receivers cannot ext ... Full text Cite

Simplified H1 Coil With a Single Layer of Surface Conductors

Journal Article IEEE Access · January 1, 2024 Transcranial magnetic stimulation (TMS) is a popular method for the non-invasive stimulation of neurons in the human brain. It has become a standard instrument in experimental brain research and approved for a range of diagnostic and therapeutic applicatio ... Full text Cite

Transcranial magnetic stimulation input-output curve slope differences suggest variation in recruitment across muscle representations in primary motor cortex.

Journal Article Front Hum Neurosci · 2024 Measurement of the input-output (IO) curves of motor evoked potentials (MEPs) elicited by transcranial magnetic stimulation (TMS) can be used to assess corticospinal excitability and motor recruitment. While IO curves have been used to study disease and ph ... Full text Link to item Cite

Modular Reconfigurable Mixed Battery System with Heterogeneous Modules

Journal Article IEEE Transactions on Transportation Electrification · January 1, 2024 Contrary to the half-bridge modules in conventional modular multilevel converters with only serial and bypass operation, emerging topologies bring additional parallel inter-module connectivity, introducing sensorless voltage balancing, load current sharing ... Full text Cite

A General Modeling and Analysis of Impacts of Unbalanced Inductance on PWM Schemes for Two-Parallel Interleaved Power Converters

Journal Article IEEE Transactions on Power Electronics · January 1, 2024 This article presents a comprehensive analysis of the impacts of inductor imbalance on the switching-related performance indicators (namely line-current ripple, high-frequency zero-sequence circulating current, and common-mode voltage) of two-parallel conv ... Full text Cite

A Hybrid Gallium-Nitride-Silicon Direct-Injection Universal Power Flow and Quality Control Circuit with Reduced Magnetics

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2024 This article presents a highly compact direct-injection power flow and quality (f/q) control topology that employs a novel hybrid switching scheme to eliminate the line transformers and discrete high-current inductors in the high-current series injection, ... Full text Cite

Frequency-Dependent Impedance Variation in Multilevel Converters with Parallel Connectivity

Conference Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC · January 1, 2024 Multilevel converters with parallel connectivity, known for their flexibility and scalability, are extensively applied across diverse fields. Earlier studies presumed an ideal inverse relationship between the output impedance and the number of paralleled m ... Full text Cite

Overshoot Dynamics in Parallel Connectivity Enabled Multilevel Converters: Generalized Analytic Expression and Impact Analysis

Conference Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC · January 1, 2024 Multilevel converters are indispensable in power transmission and motor drivetrains, offering enhanced scalability and flexibility through parallel connectivity. This advancement offers beneficial features like sensorless voltage balancing and reduced impe ... Full text Cite

A General Interchanged Interleaving Carriers for Eliminating DC/Low-Frequency Circulating Currents in Multiparallel Three-Phase Power Converters

Journal Article IEEE Transactions on Power Electronics · January 1, 2024 This article introduces a general interchanged interleaving scheme for multiparallel converters. Our analysis identifies a common challenge to the multiparallel converter using the existing interleaving scheme: the fixed interleaved angles introduce dc-bia ... Full text Cite

Universal Data Specification and Real-time Data Streaming Architecture for Cloud-based Battery Management Systems

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · January 1, 2024 Effective operation of a cloud-based electric vehicle battery management system (BMS) and control of associated modular multilevel inverters (MMI) require real-time streaming of operational data. However, existing data specifications are only suitable for ... Full text Cite

Modular Multilevel Converters With Three-Active-Switch Symmetrical-Half-Bridge Submodules and Parallel Connectivity

Journal Article IEEE Transactions on Power Electronics · January 1, 2024 Modular multilevel converters (MMCs) enjoy growing popularity primarily due to modularity and scalability, but their applications are still constrained by the complexity of hardware and control. MMCs with symmetrical-half-bridge (SHB) submodules can achiev ... Full text Cite

Grid Impedance Estimation and Decoupling through a Series-Parallel Direct-Injection Soft Open Point

Conference 2024 IEEE 10th International Power Electronics and Motion Control Conference, IPEMC 2024 ECCE Asia · January 1, 2024 The importance of grid impedance in the stability analysis of grid-tied converters is widely acknowledged and studied. However, in meshed distribution grids, it becomes crucial to distinguish feeder impedance from the overall grid impedance to accurately a ... Full text Cite

Control of electric vehicles in modern power grids

Chapter · January 1, 2024 The electrification of mobility, particularly electric vehicles (EVs), is a key element in reducing the consumption of fossil fuels. With increasing charging powers and batteries, EVs are becoming dominant loads but potentially also active elements with us ... Full text Cite

Reduced auditory perception and brain response with quiet TMS coil.

Journal Article Brain Stimul · 2024 BACKGROUND: Electromagnetic forces in transcranial magnetic stimulation (TMS) coils generate a loud clicking sound that produces confounding auditory activation and is potentially hazardous to hearing. To reduce this noise while maintaining stimulation eff ... Full text Open Access Link to item Cite

Transient Angle and Voltage Stability of Grid-Forming Converters with Typical Reactive Power Control Schemes

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · January 1, 2024 Grid-forming converters have been identified as an enabling technology in more-electronic power systems. Nevertheless, the reactive power control of grid-forming converters has often been ignored during transients. This article innovatively points out the ... Full text Cite

Comparative Analysis of Model-Free Deep Reinforcement Learning Controllers for Reconfigurable Battery Systems Output Voltage Regulation

Conference ECCE Europe 2024 - Energy Conversion Congress and Expo Europe, Proceedings · January 1, 2024 Maintaining the battery pack voltage at the reference value is crucial for the satisfactory operation of reconfigurable battery systems. This paper proposes a comparative study of reinforcement learning with various agents in reconfigurable battery system ... Full text Cite

A Novel Technique for Battery Parameter Estimation Using Equivalent Circuit Models

Conference ECCE Europe 2024 - Energy Conversion Congress and Expo Europe, Proceedings · January 1, 2024 Battery systems play an indispensable role in the adoption of electric vehicles (EVs) and hybrid electric vehicles (HEVs). Continuous monitoring of battery systems is essential to assess their condition and operational dynamics, ensuring both optimal perfo ... Full text Cite

SYSZELL: A HOLISTIC APPROACH FOR PROVIDING ANCILLARY SERVICES IN CELLULAR ENERGY SYSTEMS

Conference IET Conference Proceedings · January 1, 2024 The shift towards more renewable generation, the decline of thermal power plants and increased demand from electric vehicles and heat pumps challenges the electricity system operation.The SysZell project focuses on ancillary services for frequency stabiliz ... Full text Cite

Extraction of three mechanistically different variability and noise sources in the trial-to-trial variability of brain stimulation

Journal Article IEEE Transactions on Neural Systems and Rehabilitation Engineering · January 1, 2024 Motor-evoked potentials (MEPs) are among the few directly observable responses to external brain stimulation and serve a variety of applications, often in the form of input-output (IO) curves. Previous statistical models with two variability sources inhere ... Full text Cite

Assessment of Press-Fit Zones with Diverse Platings to Study Their Respective Strengths

Conference Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts · January 1, 2024 Solderless press-fit zones have become prevalent interconnections, originating in the telecommunications sector but now also widely adopted in an automotive industry as a key enabler for the trend to switch from large hand-wired discrete power electronics ... Full text Cite

Direction-Selective Parallel Module Structure for Cascaded Bridge and Modular Multilevel Converters with Minimum Transistor Count

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2024 Modular multilevel converters have developed into a door opener for a variety of energy applications. Enabling parallel connectivity between modules can offer several advantages to systems, including sensorless balancing, module-to-module energy exchange, ... Full text Cite

A Novel Framework for Designing Asymmetrical Multilevel Circuits to Improve Fidelity and Practicality

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2024 Incorporated across diverse applications ranging from traditional energy utilization to cutting-edge instrumentation, multilevel converters encounter a fundamental tradeoff between fidelity and switching loss or module quantity. Amidst this dilemma, asymme ... Full text Cite

Enhancing the Cybersecurity of Battery Digital Twins to Ensure the Resilient Supply for Next-Generation Telecommunication Networks

Conference 2024 IEEE 3rd Industrial Electronics Society Annual On-Line Conference, ONCON 2024 · January 1, 2024 Ensuring the resilience of energy supply is critical for the next generation of telecommunication networks, such as 5G and 6G, which demand high reliability and seamless functionality. This paper addresses the cyber-security challenges of digital twins (DT ... Full text Cite

Hairpin Windings: Twists and Bends of a Technological Breakthrough [Scanning our Past]

Journal Article Proceedings of the IEEE · January 1, 2024 Magnetic windings, in general, and small drives, in particular, are typically associated with thin round copper wires. This group of small drives includes electrical machines for automotive applications, ranging from ancillary units to traction machines fo ... Full text Cite

Comprehensive evaluation of energy storage systems for inertia emulation and frequency regulation improvement

Journal Article Energy Reports · December 1, 2023 Electric power systems foresee challenges in stability, especially at low inertia, due to the strong penetration of various renewable power sources. The value of energy storage system (ESS) to provide fast frequency response has been more and more recogniz ... Full text Cite

Design and Control of Wireless Permanent-Magnet Brushless DC Motors

Journal Article IEEE Transactions on Energy Conversion · December 1, 2023 Recently, wireless power transfer for electric motor technology has been studied, where the primary side can drive the motor without physical contact, so the load motor can be employed in isolated environments. This article proposes a wireless permanent-ma ... Full text Cite

Adaptive Optimization Charging Strategy for LCC Resonant Capacitor Charging Power Supply

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · December 1, 2023 In repetitive pulse power applications, the charging capacitor time occupies most of the time in a pulse period, and important parameters such as pulse repetition rate are restricted by the charging speed of the capacitor. To accelerate the charging speed ... Full text Cite

A Novel Direct-Injection Universal Power Flow and Quality Control Circuit

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · December 1, 2023 This article presents a novel direct-injection modular universal power flow and quality control topology exclusively using lower power components. In addition to conventional high-voltage applications, it is particularly attractive for the distribution and ... Full text Cite

A Novel Speed-Sensorless Wireless Universal Motor with Bidirectional Movement

Journal Article IEEE Transactions on Magnetics · November 1, 2023 This article proposes a novel wireless universal motor. By eliminating the motor controller and position sensor, the secondary side is very simple and robust. Besides, bidirectional movement can be achieved. The key is to employ a self-driving circuit at t ... Full text Cite

Compensated State-Space Model of Diode-Clamped MMCs for Sensorless Voltage Estimation

Journal Article IEEE Transactions on Power Electronics · October 1, 2023 Modular multilevel converters are well known in the energy sector. Generally, their stable operation is at the expense of numerous sensors, communication burden, and computationally expensive balancing strategies that challenge their expansion to cost-driv ... Full text Cite

Automatic Neurocranial Landmarks Detection from Visible Facial Landmarks Leveraging 3D Head Priors.

Conference Clin Image Based Proced Fairness AI Med Imaging Ethical Philos Issues Med Imaging (2023) · October 2023 The localization and tracking of neurocranial landmarks is essential in modern medical procedures, e.g., transcranial magnetic stimulation (TMS). However, state-of-the-art treatments still rely on the manual identification of head targets and require setti ... Full text Link to item Cite

Operation of a Hybrid Energy Storage System Based on a Cascaded Multi-Output Multilevel Converter with a Carrier-Based Modulation Scheme

Journal Article Energies · October 1, 2023 Hybrid Energy Storage Systems (HESSs) have gathered considerable interest due to their potential to achieve high energy and power density by integrating different storage technologies, such as batteries and capacitors, to name a few. Among the various topo ... Full text Cite

Three novel methods for determining motor threshold with transcranial magnetic stimulation outperform conventional procedures.

Journal Article J Neural Eng · September 13, 2023 Objective. Thresholding of neural responses is central to many applications of transcranial magnetic stimulation (TMS), but the stochastic aspect of neuronal activity and motor evoked potentials (MEPs) challenges thresholding techniques. We analyzed existi ... Full text Link to item Cite

Identifiability Analysis and Noninvasive Online Estimation of the First-Order Neural Activation Dynamics in the Brain With Closed-Loop Transcranial Magnetic Stimulation.

Journal Article IEEE Trans Biomed Eng · September 2023 BACKGROUND: Neurons demonstrate very distinct nonlinear activation dynamics, influenced by the neuron type, morphology, ion channel expression, and various other factors. The measurement of the activation dynamics can identify the neural target of stimulat ... Full text Link to item Cite

Hybrid Energy Storage System Based on a Multioutput Multilevel Converter

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · August 1, 2023 Energy storage systems (ESSs) allow improving the stability and efficiency of the electrical grids with a high penetration of renewable energy sources. Moreover, the use of Hybrid ESSs (HESSs) enables storage solutions with both high-energy and high-power ... Full text Cite

Generic Dynamically Reconfigurable Battery With Integrated Auxiliary Output and Balancing Capability

Journal Article IEEE Transactions on Power Electronics · July 1, 2023 Modular multilevel converters and cascaded H-bridge converters are established concepts in ultrahigh-voltage systems. In combination with batteries, these circuits allow dynamically changing the series/parallel configuration of the battery modules, also kn ... Full text Cite

Optimized monophasic pulses with equivalent electric field for rapid-rate transcranial magnetic stimulation.

Journal Article J Neural Eng · June 6, 2023 Objective.Transcranial magnetic stimulation (TMS) with monophasic pulses achieves greater changes in neuronal excitability but requires higher energy and generates more coil heating than TMS with biphasic pulses, and this limits the use of monophasic pulse ... Full text Link to item Cite

Feasibility study of incorporating static compensators in distribution networks containing distributed generation considering system power factor

Journal Article Electric Power Systems Research · June 1, 2023 This paper investigates the economic feasibility of incorporating distribution-level static compensators (DSTATCOMs) in distribution systems containing distributed generation (DG) by considering the effect of DGs on the power drawn from the upper hand netw ... Full text Cite

Closed-loop optimal and automatic tuning of pulse amplitude and width in EMG-guided controllable transcranial magnetic stimulation

Journal Article Biomedical Engineering Letters · May 1, 2023 This paper proposes an efficient algorithm for automatic and optimal tuning of pulse amplitude and width for sequential parameter estimation (SPE) of the neural membrane time constant and input–output (IO) curve parameters in closed-loop electromyography-g ... Full text Cite

Charging Infrastructure and Grid Integration for Electromobility

Journal Article Proceedings of the IEEE · April 1, 2023 Electric vehicle (EV) charging infrastructure will play a critical role in decarbonization during the next decades, energizing a large share of the transportation sector. This will further increase the enabling role of power electronics converters as an en ... Full text Cite

Voltage Estimation in Combination With Level-Adjusted Phase-Shifted-Carrier Modulation (LA-PSC) for Sensorless Balancing of Diode-Clamped Modular Multilevel Converters (MMCs)

Journal Article IEEE Transactions on Power Electronics · April 1, 2023 The modular multilevel converter (MMC) is a popular solution in high-voltage applications with significant potential in others. However, its stable operation is at the expense of numerous sensors, high communication burden, and complicated balancing strate ... Full text Cite

State-Space Modeling and Control of Grid-Tied Power Converters With Capacitive/Battery Energy Storage and Grid-Supportive Services

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · February 1, 2023 Advances in the fields of renewable generation, electric vehicles, and energy storage systems push forward the research on ac-dc and dc-ac grid-tied power converters. However, the variabilities of power converters create new challenges in modeling and cont ... Full text Open Access Cite

Design and Analysis of Modular Multilevel Reconfigurable Battery Converters for Variable Bus Voltage Powertrains

Journal Article IEEE Transactions on Power Electronics · January 1, 2023 Larger battery packs, an efficient battery management system, highly efficient electromechanical conversion, and fast battery charging are the key factors for extending the drive range of electric vehicles and the expansion of electromobility. We present a ... Full text Cite

Symmetries in Power Electronics and Lattice Converters

Journal Article IEEE Transactions on Power Electronics · January 1, 2023 The past 50 years witnessed the inventions of more than one thousand power electronic topologies. However, we still lack a common standard to compare and classify various topologies. Moreover, topologies are often created through intuition rather than syst ... Full text Cite

Gallium-Nitride (GaN) Transistor Design for Transient-Overload Power Applications

Conference Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC · January 1, 2023 Gallium-nitride (GaN) transistors offer unparal-leled switching speed for power electronics, e.g., for high-frequency applications or drastically reducing magnetics. Of par-ticular importance are the short-term overload capabilities of such circuits. Such ... Full text Cite

A Novel Speed-Sensorless Wireless Universal Motor with Bidirectional Movement

Conference 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings · January 1, 2023 This paper proposes a novel wireless universal motor. By eliminating the motor controller and position sensor, the secondary side is very simple and robust. Besides, bidirectional movement can be achieved. The key is to employ a self-driving circuit at the ... Full text Cite

Bidirectional Energy Transfer for Heterogeneous Modular Batteries in Electric Vehicle Applications

Conference 2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe · January 1, 2023 Modular multilevel converters enable serial and bypass operation, which are suitable for using lower-voltage components in higher-voltage systems. Reconfigurable batteries capable of parallel connection take advantage of sensorless voltage balancing, batte ... Full text Cite

Highly Integrated Electric Drive based-on Smart DC Batteries Topology and Control

Conference 2023 25th European Conference on Power Electronics and Applications, EPE 2023 ECCE Europe · January 1, 2023 Dynamically reconfigurable batteries, particularly in electromobility and energy storage applications, are the product of integrating batteries with electronics that enable the dynamic and smart reconfiguration. This enables the operator to adjust the seri ... Full text Cite

Stepless Frequency Regulation for Load-Independent Wireless Power Transfer with Time-Division Switched Capacitors

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2023 This paper proposes and implements a stepless frequency regulation method for wireless power transfer (WPT) with a simple LC compensation network to provide load-independent transmitter current. It should be mentioned that the capacitor in LC compensation ... Full text Cite

An Inductorless Direct-injection Power Control Circuit for the Distribution Grid

Conference 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 · January 1, 2023 This paper presents an inductorless direct-injection power flow and quality control topology. The circuit removes any bulky low-frequency transformer and includes a shunt active front end and high-frequency links that powers a series floating module per ph ... Full text Cite

Hybrid Direct-Injection Power Flow and Control Circuit for Low-Voltage Grids

Conference 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 · January 1, 2023 Recent advances in renewable energy distributed generation have brought up power flow problems in low-voltage grids. To address this issue, this paper proposes a novel power flow and quality control circuit. The circuit eliminates any bulky transformer and ... Full text Cite

GENERIC TECHNOLOGY MODELS TO SIMULATE FLEXIBLE OPERATION IN MULTI-ENERGY CELLULAR ENERGY SYSTEMS

Conference IET Conference Proceedings · January 1, 2023 Distribution grids are more and more penetrated by decentralized, flexible units. For this reason, aspects of active system operation become increasingly relevant there. The management of many active units on the lower voltage network levels is a challenge ... Full text Cite

Parameter Estimation of Battery Modules in a Modular Reconfigurable Battery Using Deep Neural Network

Conference 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023 · January 1, 2023 This paper introduces a groundbreaking method employing feedforward neural networks (FNN) for the precise estimation of internal parameters in modular reconfigurable batteries (MRBs). MRBs, integral in numerous applications, particularly Electric Vehicles ... Full text Cite

Development of a Modular Reconfigurable Battery System with Asymmetric Module Voltages

Conference 2023 8th IEEE Workshop on the Electronic Grid, eGRID 2023 · January 1, 2023 This paper presents a technology to operate heterogeneous, mixed batteries, i.e., batteries with different voltages in a modular cascaded double H bridge circuit allowing multilevel series/parallel output. It proposes a novel solution that can establish pa ... Full text Cite

Improving the Resilience of Modular Multilevel Converters using Concurrent Estimators

Conference 2023 IEEE 2nd Industrial Electronics Society Annual On-Line Conference, ONCON 2023 · January 1, 2023 Due to the widespread employment of power electronic devices with complex and occasionally remote/cloud control or monitoring in the future power systems, their secure operation would play a significant role in the resilient supply of critical loads. The m ... Full text Cite

Fault-Tolerant Electric Vehicle Drivetrain with Reconfigurable Battery and Multiphase Machine

Conference 2023 IEEE 2nd Industrial Electronics Society Annual On-Line Conference, ONCON 2023 · January 1, 2023 This paper describes a reconfigurable battery design to drive a multiphase machine in an electric vehicle and a control of the battery balance as well as the motor. On the other hand, the dynamically reconfigurable battery uses its inherent topological pot ... Full text Cite

A Detailed Procedure of Squirrel-Cage Three-Phase Induction Motor Parameter Estimation Using Polynomial Regression

Conference Lecture Notes in Networks and Systems · January 1, 2023 Induction motors are the most frequently used electrical motor in high-performance drive systems. The vector and sensorless speed control schemes of induction motors usually require exact values of motor parameters to obtain the robust control. This paper ... Full text Cite

A revised calcium-dependent model of transcranial magnetic theta-burst stimulation.

Journal Article Clin Neurophysiol · December 2022 OBJECTIVE: Calcium dependency is presently an essential assumption in modelling the neuromodulatory effects of transcranial magnetic stimulation. Y.Z.Huang et al.developed the first neuromodulation model to explain the bidirectional effects of theta-burst ... Full text Link to item Cite

Modular pulse synthesizer for transcranial magnetic stimulation with fully adjustable pulse shape and sequence.

Journal Article J Neural Eng · November 23, 2022 The temporal shape of a pulse in transcranial magnetic stimulation (TMS) influences which neuron populations are activated preferentially as well as the strength and even direction of neuromodulation effects. Furthermore, various pulse shapes differ in the ... Full text Link to item Cite

High-Definition High-Bandwidth DC/AC Power Conversion Through Binary Asymmetric Cascaded H-Bridges

Journal Article IEEE Transactions on Power Electronics · November 1, 2022 It is known that cascaded H-bridges with heterogenous module voltages can, in theory, generate exponentially-refined output voltage levels and achieve high output resolutions from only one power source. However, several critical considerations have yet to ... Full text Cite

Detection of motor-evoked potentials below the noise floor: rethinking the motor stimulation threshold.

Journal Article J Neural Eng · October 21, 2022 Objective. Motor-evoked potentials (MEPs) are among the most prominent responses to brain stimulation, such as supra-threshold transcranial magnetic stimulation and electrical stimulation. Understanding of the neurophysiology and the determination of the l ... Full text Link to item Cite

A formalism for sequential estimation of neural membrane time constant and input-output curve towards selective and closed-loop transcranial magnetic stimulation.

Journal Article J Neural Eng · September 19, 2022 Objective.To obtain a formalism for real-time concurrent sequential estimation of neural membrane time constant and input-output (IO) curve with transcranial magnetic stimulation (TMS).Approach.First, the neural membrane response and depolarization factor, ... Full text Link to item Cite

Data from: Optimized Monophasic Pulses with Equivalent Electric Field for Rapid-Rate Transcranial Magnetic Stimulation

Dataset · September 14, 2022 Objective. Transcranial magnetic stimulation (TMS) with monophasic pulses achieves greater changes in neuronal excitability but requires higher energy and generates more coil heating than TMS with biphasic pulses, and this limits the use of monophasic puls ... Full text Cite

Subsecond multichannel magnetic control of select neural circuits in freely moving flies.

Journal Article Nat Mater · August 2022 Precisely timed activation of genetically targeted cells is a powerful tool for the study of neural circuits and control of cell-based therapies. Magnetic control of cell activity, or 'magnetogenetics', using magnetic nanoparticle heating of temperature-se ... Full text Link to item Cite

A wireless millimetric magnetoelectric implant for the endovascular stimulation of peripheral nerves.

Journal Article Nat Biomed Eng · June 2022 Implantable bioelectronic devices for the simulation of peripheral nerves could be used to treat disorders that are resistant to traditional pharmacological therapies. However, for many nerve targets, this requires invasive surgeries and the implantation o ... Full text Link to item Cite

Isolating two sources of variability of subcortical stimulation to quantify fluctuations of corticospinal tract excitability.

Journal Article Clin Neurophysiol · June 2022 OBJECTIVE: Investigate the variability previously found with cortical stimulation and handheld transcranial magnetic stimulation (TMS) coils, criticized for its high potential of coil position fluctuations, bypassing the cortex using deep brain electrical ... Full text Link to item Cite

Control and Optimization Algorithms for Lattice Power Grids With Multiple Grid-Forming Converters

Journal Article Frontiers in Energy Research · May 4, 2022 The growth of renewable energies, together with their power converter interfaces, reshapes power systems into more-electronics power systems. Along with this paradigm shift is the requirement of grid formation by grid-tied power converters. However, existi ... Full text Cite

Characterizing the short-latency evoked response to intracortical microstimulation across a multi-electrode array.

Journal Article J Neural Eng · April 20, 2022 Objective.Persons with tetraplegia can use brain-machine interfaces to make visually guided reaches with robotic arms. Without somatosensory feedback, these movements will likely be slow and imprecise, like those of persons who retain movement but have los ... Full text Link to item Cite

Multichannel power electronics and magnetic nanoparticles for selective thermal magnetogenetics.

Journal Article J Neural Eng · March 29, 2022 Objective.We present a combination of a power electronics system and magnetic nanoparticles that enable frequency-multiplexed magnetothermal-neurostimulation with rapid channel switching between three independent channels spanning a wide frequency range.Ap ... Full text Link to item Cite

Modular multilevel TMS device with wide output range and ultrabrief pulse capability for sound reduction.

Journal Article J Neural Eng · March 17, 2022 Objective.This article presents a novel transcranial magnetic stimulation (TMS) pulse generator with a wide range of pulse shape, amplitude, and width.Approach.Based on a modular multilevel TMS (MM-TMS) topology we had proposed previously, we realized the ... Full text Link to item Cite

Low-Frequency Scheduler for Optimal Conduction Loss in Series/Parallel Modular Multilevel Converters

Journal Article IEEE Transactions on Power Electronics · March 1, 2022 Various advantages are directing the attention to modular multilevel converters (MMCs). Simple ways to balance the voltage difference of MMC modules are strongly desired but an open problem. The modular multilevel series/parallel converter (MMSPC) can be a ... Full text Open Access Cite

Control and Optimization of Lattice Converters

Journal Article Electronics (Switzerland) · February 1, 2022 Multilevel converters continue their upward trend in renewable generation, electric vehicles, and power quality conditioning applications. Despite having satisfactory voltage capabilities, mainstream multilevel converters suffer from poor current sharing p ... Full text Cite

Prediction of Force Recruitment of Neuromuscular Magnetic Stimulation From 3D Field Model of the Thigh.

Journal Article IEEE Trans Neural Syst Rehabil Eng · 2022 Neuromuscular magnetic stimulation is a promising tool in neurorehabilitation due to its deeper penetration, notably lower distress, and respectable force levels compared to surface electrical stimulation. However, this method faces great challenges from a ... Full text Link to item Cite

On-Line Multistep Predictive Spectral Control of the Distortion in Switched-Mode Converters

Journal Article IEEE Access · January 1, 2022 In automotive power electronics, distortion and electromagnetic interference (EMI) generated by the switching action of power semiconductors can be a significant challenge for the design of a compact, lightweight vehicle. As semiconductor switching frequen ... Full text Cite

Bandwidth-Increased Ripple-Mitigating Scheduling Algorithm for Dynamically Reconfigurable Batteries

Journal Article IEEE Access · January 1, 2022 Modular cascaded circuits offer attractive qualities in reconfigurable battery applications, including improved fault tolerance and flexibility. In contrast to conventional hard-wired dc battery packs, however, cascaded topologies, such as modular multilev ... Full text Cite

Self-Aligning Capability of IPT Pads for High-Power Wireless EV Charging Stations

Journal Article IEEE Transactions on Industry Applications · January 1, 2022 This article studies magnetic forces between transmitter (Tx) and receiver (Rx) coils in an inductive power transfer (IPT) system aiming to use those forces to align the coils and, consequently, improve power transfer. Due to its popularity, the analysis i ... Full text Cite

Ageing Mitigation and Loss Control in Reconfigurable Batteries in Series-Level Setups

Journal Article · 2022 This paper presents a novel control method that reduces the low-frequency ripple of dynamical-ly reconfigurable battery technology to reduce cell ageing and loss. It furthermore shifts the residual ripple to higher frequencies where the lower impedance red ... Open Access Cite

Estimation of Battery Parameters in Cascaded Half-Bridge Converters with Reduced Voltage Sensors

Conference 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe · January 1, 2022 Although modular multilevel converters (MMC) and cascaded half-bridge (CHB) converters are an established concept in HVDC, MMCs and CHBs have started to find new applications, including modular converters with integrated energy storage systems. Despite var ... Cite

Voltage Estimation for Diode-Clamped MMCs Based on a Simplified Neural Network

Conference 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe · January 1, 2022 The modular multilevel converter (MMC) is a popular solution in high-voltage dc application and has significant potential in others. Generally, the MMC's stable operation is at the expense of numerous sensors, communication burdens, and complicated balanci ... Cite

A Simplified Model for the Battery Ageing Potential under Highly Rippled Load

Conference 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe · January 1, 2022 Influence of rippled load on lithium batteries is receiving increased attention. According to recent studies, accelerated ageing strongly depends on the frequency control of the ripple. We use electrochemical models to derive a highly simplified regression ... Cite

Modular Battery-Integrated Power Electronics-Modelling, Advantages, and Challenges

Conference 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe · January 1, 2022 Modular battery-integrated converters (dynamically reconfigurable modular batteries) are expanding into emerging applications. Although widely popular, we are yet to fully exploit their potential. This paper provides a critical discussion of the more negle ... Cite

An Accurate Practical Technique for Real-Time State-of-Charge Estimation of Li-Ion Batteries Using Neural Networks

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2022 Lithium-ion (Li-ion) batteries have attracted significant attention in terms of technical features, but to use them within their specific operating region and prevent undue degradation, it is crucial to constantly monitor their state of charge (SOC). Howev ... Full text Cite

A Highly Compact Transformerless Universal Power-Flow and Quality Control as well as Soft Open Point Circuit

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2022 The electricity system, particularly the low-voltage grid is under immense pressure due to rapid growth of high-power loads and sources, such as vehicle chargers and photovoltaic installations, which can locally overload lines and generate both over-and un ... Full text Cite

Voltage and Resistance Estimation of Battery-Integrated Cascaded Converters

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2022 Modular reconfigurable batteries, also known as smart batteries, are gaining significant traction, mainly due to the large environmental incentives and falling price of electronic components. Although they have many advantages compared to a hard-wired batt ... Full text Cite

Asymmetrical Modular Multilevel Converter with Sensorless Voltage Control for High-Quality Output

Conference IECON Proceedings (Industrial Electronics Conference) · January 1, 2022 The paper proposes an Asymmetrical Modular Multilevel Converter (AMMC) suitable for low/medium-voltage dc-ac conversions with very high output quality. The modules' dc-links of the AMMC are charged to a binary exponential sequence to produce a large number ... Full text Cite

A Two-Dimensional Misalignment-Tolerant IPT System Based on Three-arm Voltage Doubler Rectifier

Conference 2022 IEEE Energy Conversion Congress and Exposition, ECCE 2022 · January 1, 2022 Inductive power transfer (IPT) is a promising solution to replace the plug-in charging system for electric vehicles (EVs) owing to its safety and convenience. However, the efficiency and output stability of the IPT system will decrease when misalignment ha ... Full text Cite

Highly Integrated Electric Drive with Modular Reconfigurable Batteries

Conference 1st IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2022 · January 1, 2022 Dynamically reconfigurable batteries, with broad applications in electromobility and energy storage, are the product of integrating batteries in modular multilevel converters. Such a structure enables the controller to adjust the configuration of the batte ... Full text Cite

Stability Design of Single-loop PI Controller for Grid-Forming Converters with Compact LLCL Filter

Conference 1st IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2022 · January 1, 2022 Grid-forming converters (GFM) and related con-trol strategies in combination with renewable energy sources (RES) and energy storage systems (ESS) are considered a ne-cessity in future more-electronic grids with increasing penetration of controlled switched ... Full text Cite

Highly Compact Transformerless Universal Power-Flow and Quality Control Circuit

Conference 1st IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2022 · January 1, 2022 This paper presents a novel, highly compact direct-injection modular universal power flow and quality control topology exclusively using lower power components. In addition to conventional high-voltage applications, it is particularly attractive for the di ... Full text Cite

A high-frequency pulsating dc link for electric vehicle drives with reduced losses

Journal Article IEEE Industrial Electronics Society (IECON) · November 1, 2021 This paper proposes a motor drive suitable for electric vehicles (EVs) with notably reduced losses as compared to conventional drives. The proposed drive feeds the dc-link with a dynamically reconfigurable battery formed by cascaded half-bridges containing ... Open Access Cite

Parameter Estimation of Batteries in MMCs with Parallel Connectivity using PSO

Conference IECON Proceedings (Industrial Electronics Conference) · October 13, 2021 Modular multilevel converters (MMCs) are a well-known solution in high-voltage applications. Recently, new topologies such as MMCs with series/parallel (MMSPC) connectivity are attracting large amount focus, due to their improved efficiency as well as self ... Full text Cite

Efficiency Analysis of Conduction Losses in Modular Multilevel Converters with Parallel Functionality

Conference IECON Proceedings (Industrial Electronics Conference) · October 13, 2021 Modular multilevel converters (MMC) show great potential in high-voltage as well as emerging applications such as grid storage and electro mobility. The main advantages over the two-level converters include flexibility, scalability, and higher degrees of f ... Full text Cite

An Estimation-Based Solution to Weak-Grid-Induced Small-Signal Stability Problems of Power Converters

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · August 1, 2021 The large-scale deployment of grid-tied power electronic converters in renewable generation, electric motor drives, and energy storage systems speeds up the global energy transition. However, the stability problems faced by power converters in weak grids, ... Full text Open Access Cite

Reduction of MMC Capacitances through Parallelization of Symmetrical Half-Bridge Submodules

Journal Article IEEE Transactions on Power Electronics · August 1, 2021 Modular multilevel converters (MMCs) enjoy the benefits of modularity and scalability. In particular, MMCs with symmetrical half-bridge submodules enable bipolar operation yet with a simple structure and low conduction losses. However, bulky dc capacitors ... Full text Cite

Is value-based choice repetition susceptible to medial frontal transcranial direct current stimulation (tDCS)? A preregistered study.

Journal Article Cogn Affect Behav Neurosci · August 2021 In value-based decision making, people have to weigh different options based on their subjective value. This process, however, also is influenced by choice biases, such as choice repetition: in a series of choices, people are more likely to repeat their de ... Full text Link to item Cite

Double-Containment Coil With Enhanced Winding Mounting for Transcranial Magnetic Stimulation With Reduced Acoustic Noise.

Journal Article IEEE Trans Biomed Eng · July 2021 OBJECTIVE: This work aims to reduce the acoustic noise level of transcranial magnetic stimulation (TMS) coils. TMS requires high currents (several thousand amperes) to be pulsed through the coil, which generates a loud acoustic impulse whose peak sound pre ... Full text Link to item Cite

A highly-efficient and cost-effective reconfigurable IPT topology for constant-current and constant-voltage battery charging

Conference Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC · June 14, 2021 For a proper charging process in combination with inductive power transfer (IPT), the IPT topology has to meet the demand of both constant charging current (CC) or constant charging voltage (CV) for the battery within a wide range of loads that may be dete ... Full text Cite

Electric Vehicle Charging Infrastructure: From Grid to Battery

Journal Article IEEE Industrial Electronics Magazine · June 1, 2021 Electrification has been a key component of technological progress and economic development since the industrial revolution. It has improved living conditions, spurred innovation, and increased efficiency across all sectors of our economy and all aspects o ... Full text Cite

Input-output slope curve estimation in neural stimulation based on optimal sampling principles.

Journal Article J Neural Eng · May 28, 2021 This paper discusses some of the practical limitations and issues, which exist for the input-output (IO) slope curve estimation (SCE) in neural, brain and spinal, stimulation techniques. The drawbacks of the SCE techniques by using existing uniform samplin ... Full text Link to item Cite

Modular Multilevel Series/Parallel Converter for Bipolar DC Distribution and Transmission

Journal Article IEEE Journal of Emerging and Selected Topics in Power Electronics · April 1, 2021 This article proposes a novel bipolar-type dc system suitable for both distribution and transmission systems based on modular multilevel series/parallel converters (MMSPCs). The system features decoupled operations of each pole of the bipolar system, being ... Full text Open Access Cite

Grid Impedance Estimation through Grid-Forming Power Converters

Journal Article IEEE Transactions on Power Electronics · February 1, 2021 In more-electronics power systems, grid-forming power converters, which operate as ac voltage sources, regulate the grid frequency and voltages in replacement of synchronous generators. Notably, grid impedances greatly influence the small signal and voltag ... Full text Open Access Cite

Optimal Discontinuous Space Vector PWM for Zero-Sequence-Circulating Current Reduction in Two Paralleled Three-Phase Two-Level Converter

Journal Article IEEE Transactions on Industrial Electronics · February 1, 2021 This article proposes an optimal discontinuous pulsewidth modulation (ODPWM) strategy to reduce the zero-sequence circulating current (ZSCC) for paralleled three-phase two-level converters. While existing methods generally entail a tradeoff between the ZSC ... Full text Cite

Multilevel Converters with Symmetrical Half-Bridge Submodules and Sensorless Voltage Balance

Journal Article IEEE Transactions on Power Electronics · January 1, 2021 H-bridge-based multilevel converters (e.g., cascaded H-bridge converters) benefit from modularity and scalability. However, they suffer from the complexity and costs associated with a large count of semiconductor switches, together with their drivers and p ... Full text Open Access Cite

A Reduced Series/Parallel Module for Cascade Multilevel Static Compensators Supporting Sensorless Balancing

Journal Article IEEE Transactions on Industrial Electronics · January 1, 2021 Cascaded multilevel converters have been gaining popularity in static compensators (STATCOMs) owing to their excellent modularity, output quality, and fault tolerance. However, cascaded multilevel converters require a large number of galvanically isolated ... Full text Open Access Cite

High Bandwidth Power Electronics and Magnetic Nanoparticles for Multichannel Magnetogenetic Neurostimulation

Journal Article · 2021 Objective We present a power electronic system and magnetic nanoparticles for multiplexed magnetogenetic neurostimulation with three channels spanning a wide frequency range and rapid channel switching capability. This enables selective heating of ... Full text Cite

Modular multilevel TMS device with wide output range and ultrabrief pulse capability for sound reduction

Journal Article · 2021 Objective This article presents a novel transcranial magnetic stimulation (TMS) pulse generator with a wide range of pulse shape, amplitude, and width. Approach Based on a modular multilevel TMS (MM-TMS) topology we had proposed previousl ... Full text Cite

Symmetries in Power Electronics

Conference 2021 IEEE Energy Conversion Congress and Exposition, ECCE 2021 - Proceedings · January 1, 2021 The past 50 years witnessed the inventions of more than one thousand power electronic topologies. However, we still lack a common standard to compare and classify various topologies. Moreover, topologies are often created through intuition rather than syst ... Full text Cite

Modulation and Control of Series/Parallel Module for Ripple-Current Reduction in Star-Configured Split-Battery Applications

Journal Article IEEE Transactions on Power Electronics · December 1, 2020 Split-battery converters based on cascaded H-bridges (CHBs) are gaining popularity due to their excellent physical modularity. During operation, however, the batteries experience substantial current ripple. Conventional ripple-current reduction methods rel ... Full text Open Access Cite

A High Performance Interleaved Discontinuous PWM Strategy for Two Paralleled Three-Phase Inverter

Journal Article IEEE Transactions on Power Electronics · December 1, 2020 This article aims to obtain the optimal combination of the switching loss, maximum zero-sequence circulating current (ZSCC), and line current ripple, which benefits most of the applications. The analysis shows that the interleaved discontinues pulsewidth m ... Full text Cite

A Simplified Analysis of Equivalent Resistance in Modular Multilevel Converters with Parallel Functionality

Conference IECON Proceedings (Industrial Electronics Conference) · October 18, 2020 The advantages of modular multilevel converters (MMC) over conventional two-level converters have lead to new emerging topologies and applications. The MMC with series/parallel connectivity (MMSPC) is one of the more recent topologies that can provide stab ... Full text Cite

Li-ion Battery Models and A Simplified Online Technique to Identify Parameters of Electric Equivalent Circuit Model for EV Applications

Conference IECON Proceedings (Industrial Electronics Conference) · October 18, 2020 Reducing the computational burden and improving the accuracy are in the two opposite sides of every electrical equivalent circuit model (EECM) for batteries. In this paper, a novel identification method is developed to estimate EECM parameters for any Li-i ... Full text Cite

H-Bridge MMCs with Symmetrical Half-Bridge Submodules

Conference ECCE 2020 - IEEE Energy Conversion Congress and Exposition · October 11, 2020 Recently, the announced development of modular multilevel converters (MMCs) advances the field of electric motor drive, high-voltage dc/ac transmission, and renewable generation. In particular, H-bridge MMCs benefit from a symmetrical macroscopic topology, ... Full text Cite

Line Current Ripple Minimization PWM Strategy with Reduced Zero-Sequence Circulating Current for Two Parallel Interleaved Three-Phase Converters

Journal Article IEEE Transactions on Power Electronics · July 1, 2020 This article proposes a line-current ripple minimization pulsewidth modulation strategy with reduced zero-sequence circulating current (ZSCC) for two parallel three-phase two-level converters. We split each 60° sector into six subsectors, each applies the ... Full text Cite

Space-vector-based hybrid PWM for reduced line current ripple and common mode voltage in paralleled interleaved three-phase two-level converter

Journal Article IET Power Electronics · May 6, 2020 This paper proposes a hybrid space vector modulation (HBSVM) to reduce line current ripple while maintaining the optimal common mode voltage and zero sequence circulating current peak. The analysis reveals that the vector errors can be reduced by an equiva ... Full text Cite

Space-Vector-Based Hybrid PWM for Zero-Sequence-Circulating-Current RMS and Common Mode Voltage Reduction in Two Parallel Interleaved Two-Level Converters

Journal Article Journal of Electrical Engineering and Technology · May 1, 2020 This paper aims at reducing the root mean square (RMS) values of the zero-sequence circulating current (ZSCC). The analysis reveals that the ZSCC is determined by the duty ratios of the medium voltage vector and zero vector. Whereas the reference voltage f ... Full text Cite

Sound comparison of seven TMS coils at matched stimulation strength.

Journal Article Brain Stimul · 2020 BACKGROUND: Accurate data on the sound emitted by transcranial magnetic stimulation (TMS) coils is lacking. METHODS: We recorded the sound waveforms of seven coils with high bandwidth. We estimated the neural stimulation strength by measuring the induced e ... Full text Link to item Cite

Erratum to: "Optimal Estimation of Neural Recruitment Curves Using Fisher Information: Application to Transcranial Magnetic Stimulation".

Journal Article IEEE Trans Neural Syst Rehabil Eng · November 2019 This erratum provides the link to the software implementation of the algorithm and the examples presented in [1], which was omitted by mistake in the published version of the manuscript. The algorithm was implemented in Matlab and is available online on Co ... Full text Link to item Cite

A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation

Journal Article IEEE Transactions on Power Electronics · October 1, 2019 When providing ac output, modular multilevel converters (MMCs) experience power fluctuation in the phase arms. The power fluctuation causes voltage ripple on the module capacitors, which grows with the output power and inversely to the output frequency. Th ... Full text Open Access Cite

Different parallel connections generated by the Modular Multilevel Series/Parallel Converter: An overview

Conference IECON Proceedings (Industrial Electronics Conference) · October 1, 2019 The Modular Multilevel Series Parallel Converter (MMSPC) not only allows dynamic interconnection among the modules in series connection, like the traditional Modular Multilevel Converter (MMC), but also in parallel connection. This extra switching state am ... Full text Cite

Accuracy of robotic coil positioning during transcranial magnetic stimulation.

Journal Article J Neural Eng · September 17, 2019 OBJECTIVE: Robotic positioning systems for transcranial magnetic stimulation (TMS) promise improved accuracy and stability of coil placement, but there is limited data on their performance. Investigate the usability, accuracy, and limitations of robotic co ... Full text Link to item Cite

Module implementation and modulation strategy for sensorless balancing in modular multilevel converters

Journal Article IEEE Transactions on Power Electronics · September 1, 2019 Modules with series and parallel connectivity add new features and operation modes to modular multilevel converters (MMCs). Compared to full-and half-bridges, the series/parallel modules allow sensorless module balancing and reduce conduction loss with the ... Full text Cite

Concept of a distributed photovoltaic multilevel inverter with cascaded double H-bridge topology

Journal Article International Journal of Electrical Power and Energy Systems · September 1, 2019 This paper presents proof-of-concept of a novel photovoltaic (PV) inverter with integrated short-term storage, based on the modular cascaded double H-bridge (CHB 2 ) topology, and a new look-up table control approach. This topology combines and extends the ... Full text Cite

Online switch open-circuit fault diagnosis using reconfigurable scheduler for modular multilevel converter with parallel connectivity

Conference 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe · September 1, 2019 The modular multilevel series-parallel converter (MMSPC) was shown to provide advantages in several industrial applications, but the many individual switches may challenge its reliability. This paper proposes an effective fault diagnosis method (FDM) based ... Full text Cite

Closed-loop predictively optimizing control for modular multilevel converter with parallel connectivity

Conference 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe · September 1, 2019 This paper adopts the bilinear modeling method to design a coherent model for modular multilevel converters with parallel connectivity and proposes an optimized closed-loop control combining proportional resonant (PR) control, nearest level modulation, and ... Full text Cite

Current Injection Methods for Ripple-Current Suppression in Delta-Configured Split-Battery Energy Storage

Journal Article IEEE Transactions on Power Electronics · August 1, 2019 Cascaded H-bridge (CHB) converters are receiving growing attention in battery energy storage systems (BESS) due to their modularity and flexibility. However, direct generation of ac output in CHB-BESSs incurs large second-order current ripple in the batter ... Full text Cite

Statistical Model of Motor-Evoked Potentials.

Journal Article IEEE Trans Neural Syst Rehabil Eng · August 2019 Motor-evoked potentials (MEPs) are widely used for biomarkers and dose individualization in transcranial stimulation. The large variability of MEPs requires sophisticated methods of analysis to extract information fast and correctly. Development and testin ... Full text Link to item Cite

Optimal Estimation of Neural Recruitment Curves Using Fisher Information: Application to Transcranial Magnetic Stimulation.

Journal Article IEEE Trans Neural Syst Rehabil Eng · June 2019 This paper presents a novel method for fast and optimal determination of recruitment (input-output, IO) curve parameters in neural stimulation. A sequential parameter estimation (SPE) method was developed based on the Fisher information matrix (FIM), with ... Full text Link to item Cite

Modular Multilevel Series/Parallel Converter with Switched-Inductor Energy Transfer between Modules

Journal Article IEEE Transactions on Power Electronics · May 1, 2019 This paper presents a modular multilevel series/parallel converter (MMSPC) with intermodule switched-inductor power transfer. The switched-inductor voltage conversion feature allows controllable and efficient transfer of energy between modules with nonnegl ... Full text Cite

A Control Scheme to Reduce the Current Load of Integrated Batteries in Cascaded Multilevel Converters

Conference ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia · May 1, 2019 While battery-integrated modular multilevel converters are a promising alternative to conventional inverters in applications such as automobiles, they often cause significant second-harmonic pulsating currents in the batteries, increasing their degradation ... Cite

Accuracy of robotic coil positioning during transcranial magnetic stimulation

Journal Article · 2019 Objective Robotic positioning systems for transcranial magnetic stimulation (TMS) promise improved accuracy and stability of coil placement, but there is limited data on their performance. This text investigates the usability, accuracy, and limita ... Full text Cite

Design of transcranial magnetic stimulation coils with optimal trade-off between depth, focality, and energy.

Journal Article J Neural Eng · August 2018 OBJECTIVE: Transcranial magnetic stimulation (TMS) is a noninvasive brain stimulation technique used for research and clinical applications. Existent TMS coils are limited in their precision of spatial targeting (focality), especially for deeper targets. T ... Full text Link to item Cite

Noninvasive Detection of Motor-Evoked Potentials in Response to Brain Stimulation Below the Noise Floor-How Weak Can a Stimulus Be and Still Stimulate.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · July 2018 Motor-evoked potentials (MEP) are one of the most important responses to brain stimulation, such as supra-threshold transcranial magnetic stimulation (TMS) and electrical stimulation. The understanding of the neurophysiology and the determination of the lo ... Full text Open Access Link to item Cite

Field Distribution of Transcranial Static Magnetic Stimulation in Realistic Human Head Model.

Journal Article Neuromodulation · June 2018 OBJECTIVE: The objective of this work was to characterize the magnetic field (B-field) that arises in a human brain model from the application of transcranial static magnetic field stimulation (tSMS). MATERIALS AND METHODS: The spatial distribution of the ... Full text Link to item Cite

Ripple current suppression methods for star-configured modular multilevel converters

Conference Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society · December 15, 2017 The star-configured modular multilevel converter is a promising topology for grid-connected storage as well as power-quality applications and motor drives. During operation, the ac output power generates substantial current pulsation at twice the output fr ... Full text Cite

Submodule short-circuit fault diagnosis based on wavelet transform and support vector machines for modular multilevel converter with series and parallel connectivity

Conference Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society · December 15, 2017 The modular multilevel converter with series and parallel connectivity was shown to provide advantages in several industrial applications. Its reliability largely depends on the absence of failures in the power semiconductors. We propose and analyze a faul ... Full text Cite

Space-vector frame spectral control of the switching distortion of an automotive drive inverter

Conference 2017 19th European Conference on Power Electronics and Applications, EPE 2017 ECCE Europe · November 6, 2017 State-of-the-art modulation techniques, such as space-vector modulation for the generation of threephase alternating current, result in strong peaks in the output spectrum at the switching frequency and its harmonics. We present a space-vector implementati ... Full text Cite

Predictive control of modular multilevel series/parallel converter for battery systems

Conference 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 · November 3, 2017 This paper presents a multi-step predictive control framework for modular multilevel converters with series/parallel connectivity - a more generalized topology of the H-bridge-based modular multilevel converters. The controller coordinates a wide range of ... Full text Cite

Distributed balancing control for modular multilevel series/parallel converter with capability of sensorless operation

Conference 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017 · November 3, 2017 Modular multilevel converters (MMC) have many advantages owing to their power-stage modularity. However, this modularity does not extend directly to the control. Particularly, the balancing control usually requires central coordination and increases in com ... Full text Cite

Control of Modular Multilevel Converter with Parallel Connectivity-Application to Battery Systems

Journal Article IEEE Transactions on Power Electronics · November 1, 2017 This paper presents a multiobjective real-time controller for a modular multilevel converter capable of parallel module connectivity, the so-called modular multilevel series parallel converter (MMSPC). The MMSPC topology allows the batteries to be dynamica ... Full text Cite

Highly dynamic multiphase wide-bandgap DC-DC converter for automotive active suspension systems

Conference 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 · July 25, 2017 In order to enable dynamic driving while increasing both safety and comfort, active suspension systems can minimize or completely eliminate roll movements in the vehicle body. Active electrical roll stabilization can provide high dynamics to compensate rol ... Full text Cite

Photovoltaic multilevel inverter with distributed maximum power point tracking and dynamic circuit reconfiguration

Conference 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 · July 25, 2017 This work will present a novel photovoltaic (PV) inverter with integrated short-term storage. The topology combines advantages of microinverter topologies, such as module-specific maximum-power-point tracking, failure-tolerance, safety due to limited volta ... Full text Cite

Spectral synthesis of switching distortion in multilevel converters

Conference Proceedings of the International Conference on Power Electronics and Drive Systems · July 2, 2017 We present a novel modulation method for selective reduction of peaks and practically free control of the output spectrum. In contrast to conventional pulse-width modulation (PWM), the model-predictive approach controls the output spectrum directly in the ... Full text Cite

Increase of the allowable switching rate of wide-bandgap semiconductors through spectral control in a 12 v to 48 v gallium-nitride DC/DC converter

Conference Proceedings of the International Conference on Power Electronics and Drive Systems · July 2, 2017 Efficient power conversion currently relies on switching modulation to accurately control the output. Typically, the switching rate is fixed, particularly for the larger power units in automotive applications. Due to the powerful peaks in the output spectr ... Full text Cite

Efficiency evaluation of MMSPC/CHB topologies for automotive applications

Conference Proceedings of the International Conference on Power Electronics and Drive Systems · July 2, 2017 As an increasing amount of research is investigating the replacement of conventional combustion engines in automo-biles with an electric power train, there has been significant interest in novel inverter topologies to replace two-level inverters. This pape ... Full text Cite

The development and modelling of devices and paradigms for transcranial magnetic stimulation.

Journal Article Int Rev Psychiatry · April 2017 Magnetic stimulation is a non-invasive neurostimulation technique that can evoke action potentials and modulate neural circuits through induced electric fields. Biophysical models of magnetic stimulation have become a major driver for technological develop ... Full text Link to item Cite

A novel spectral control method for an automotive gallium nitride DC-DC converter

Conference PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management · January 1, 2017 Common power electronic devices currently overwhelmingly rely on fixed-frequency modulation schemes to synthesize output voltage levels between the fixed voltage levels available to the semiconductors. The distinct switching rate causes large peaks in the ... Full text Cite

Highly dynamic gallium-nitride DC-DC converter for 48 V systems

Conference EVS 2017 - 30th International Electric Vehicle Symposium and Exhibition · January 1, 2017 The 48 V system is currently established as a low-voltage supply for high-power loads and auxiliaries that do not justify the cost and safety issues associated with high voltage systems, such as small electric drives in mild hybrids, active chassis systems ... Cite

Spectral synthesis of switching distortion in automotive drive inverters

Conference 2016 18th European Conference on Power Electronics and Applications, EPE 2016 ECCE Europe · October 25, 2016 Conventional inverters rely on switching modulation to generate the alternating current (AC) output required by many loads, such as electric machines. Particularly in mass-produced electric vehicles (EV), inverters exclusively use pulse-width modulation (P ... Full text Cite

Sensorless scheduling of the modular multilevel series-parallel converter: Enabling a flexible, efficient, modular battery

Conference Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC · May 10, 2016 We present a control approach for the modular multilevel converter (MMC) with series and parallel module connectivity (MMSPC) that provides natural module balancing, reduced conduction losses, and enhanced robustness afforded by the parallel mode. In conve ... Full text Cite

Effect of coil orientation on strength-duration time constant and I-wave activation with controllable pulse parameter transcranial magnetic stimulation.

Journal Article Clin Neurophysiol · January 2016 OBJECTIVE: To compare the strength-duration (S-D) time constants of motor cortex structures activated by current pulses oriented posterior-anterior (PA) or anterior-posterior (AP) across the central sulcus. METHODS: Motor threshold and input-output curve, ... Full text Link to item Cite

Enhancement of Neuromodulation with Novel Pulse Shapes Generated by Controllable Pulse Parameter Transcranial Magnetic Stimulation.

Journal Article Brain Stimul · 2016 BACKGROUND: Standard repetitive transcranial magnetic stimulation (rTMS) devices generate bidirectional biphasic sinusoidal pulses that are energy efficient, but may be less effective than monophasic pulses that induce a more unidirectional electric field. ... Full text Link to item Cite

Isolated low-power multi-output DC-DC converters with heterogeneous loads for an efficient supply of modular power electronics systems

Conference PCIM Europe 2016; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management · January 1, 2016 Appropriate isolated supply solutions for recent power converters, such as distributed smart-grid units or modular multilevel converters, have to provide sufficient power reserve, but often suffer from low efficiency at partial load, causing unnecessary la ... Cite

Fast Modular Multilevel series/Parallel Converter for direct-drive gas turbines

Journal Article Proceedings of the 2015 IEEE North West Russia Section Young Researchers in Electrical and Electronic Engineering Conference, ElConRusNW 2015 · May 5, 2015 We present a novel Modular Multilevel Parallel Converter (M2PC) technology that solves key issues in the application in frequency-variable direct-drive gas turbine systems with high rotational speed as stationary power supplies as well as in mobile setups ... Full text Cite

Modular multilevel converter with series and parallel module connectivity: Topology and control

Journal Article IEEE Transactions on Power Electronics · January 1, 2015 This paper introduces a novel modular multilevel series/parallel converter that allows switching modules dynamically not only in series, as in the traditional modular multilevel converter (M2C), but also in parallel. As in M2C, the semiconductor voltages d ... Full text Cite

Quiet transcranial magnetic stimulation: Status and future directions.

Conference Annu Int Conf IEEE Eng Med Biol Soc · 2015 A significant limitation of transcranial magnetic stimulation (TMS) is that the magnetic pulse delivery is associated with a loud clicking sound as high as 140 dB resulting from electromagnetic forces. The loud noise significantly impedes both basic resear ... Full text Link to item Cite

A battery modular multilevel management system (BM3) for electric vehicles and stationary energy storage systems

Journal Article 2014 16th European Conference on Power Electronics and Applications, EPE-ECCE Europe 2014 · September 25, 2014 The dependency of energy systems on battery storage systems is constantly increasing, but there are still several unsolved problems. Current battery systems are inflexible, only cells with the same electrical parameters can be combined, and cell defects ca ... Full text Cite

Coil Design for Neuromuscular Magnetic Stimulation Based on a Detailed 3-D Thigh Model

Journal Article IEEE Transactions on Magnetics · June 1, 2014 Magnetic stimulation is gaining importance as an alternative to electrical stimulation in neurorehabilitation because it offers deep penetration and low pain. However, presently available equipment is not ideal for this purpose and sometimes even unsuitabl ... Full text Cite

A novel model incorporating two variability sources for describing motor evoked potentials.

Journal Article Brain Stimul · 2014 OBJECTIVE: Motor evoked potentials (MEPs) play a pivotal role in transcranial magnetic stimulation (TMS), e.g., for determining the motor threshold and probing cortical excitability. Sampled across the range of stimulation strengths, MEPs outline an input- ... Full text Link to item Cite

Transcranial Magnetic Stimulation Device with Reduced Acoustic Noise

Journal Article IEEE Magnetics Letters · January 1, 2014 Transcranial magnetic stimulation (TMS) is widely used for noninvasive activation of neurons in the brain for research and clinical applications. The strong, brief magnetic pulse generated in TMS is associated with a loud (>100 dB) clicking sound that can ... Full text Cite

Modular Multilevel Parallel Converter (M2PC) for electrically driven vehicles

Journal Article PCIM Europe Conference Proceedings · January 1, 2014 The new Modular Multilevel Parallel Converter (M2PC) for electrically driven vehicles is presented in this paper. The new M2PC upgrades the advantages of common Modular Multilevel Converters (M2C) through the ability to connect capacitors of nearby Submodu ... Cite

Optimization of hydrogen gas turbine power supply by means of a novel modular multilevel parallel converter (M2PC)

Journal Article IREC 2014 - 5th International Renewable Energy Congress · January 1, 2014 A novel Modular Multilevel Parallel Converter (M2PC) for an optimized Hydrogen Gas Turbine Power Supply (HPU) is presented in this paper. This new M2PC improves the energy density, scalability and variance of the system voltage characteristics, in addition ... Full text Cite

Static magnetic field modulates excitatory activity in layer II/III pyramidal neurons of the rat motor cortex

Conference International IEEE/EMBS Conference on Neural Engineering, NER · December 1, 2013 Recent studies revealed that transcranial stimulation with static magnetic field (SMF) at 0.1-0.15 T results in reduction of neural excitability in the human motor cortex. We explore the mechanisms of this phenomenon with patch-clamp recording in rat brain ... Full text Cite

A realistic model for approaching the activation question of neuromuscular magnetic stimulation

Journal Article International IEEE/EMBS Conference on Neural Engineering, NER · December 1, 2013 Neuromuscular magnetic stimulation is an auspicious tool in rehabilitation. It causes low distress and allows a more homogeneous activation without the problematic current concentration at electrodes as known from electrical stimulation. However, the perfo ... Full text Cite

Pulse width dependence of motor threshold and input-output curve characterized with controllable pulse parameter transcranial magnetic stimulation.

Journal Article Clin Neurophysiol · July 2013 OBJECTIVE: To demonstrate the use of a novel controllable pulse parameter TMS (cTMS) device to characterize human corticospinal tract physiology. METHODS: Motor threshold and input-output (IO) curve of right first dorsal interosseus were determined in 26 a ... Full text Link to item Cite

Magnetic stimulation with arbitrary waveform shapes

Journal Article IFMBE Proceedings · April 16, 2013 Device technology for magnetic stimulation is still extremely limited regarding waveform dynamics and flexibility. Existing systems are well-known to be very inefficient from an energy perspective. In addition, neither a noninvasive analysis of different n ... Full text Open Access Cite

Rotational magnetic pulses enhance the magnetofection efficiency in vitro in adherent and suspension cells

Journal Article Journal of Magnetism and Magnetic Materials · April 1, 2013 The association of magnetic nanoparticles with gene delivery vectors in combination with the use of gradient magnetic fields (magnetofection) enables improved and synchronised gene delivery to cells. In this paper, we report a system comprising rotating pe ... Full text Cite

Analysis and optimization of pulse dynamics for magnetic stimulation.

Journal Article PLoS One · 2013 Magnetic stimulation is a standard tool in brain research and has found important clinical applications in neurology, psychiatry, and rehabilitation. Whereas coil designs and the spatial field properties have been intensively studied in the literature, the ... Full text Link to item Cite

Optimization of magnetic neurostimulation waveforms for minimum power loss.

Journal Article Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference · December 1, 2012 Magnetic stimulation is a key tool in experimental brain research and several clinical applications. Whereas coil designs and the spatial field properties have been intensively studied in the literature, the temporal dynamics of the field has received litt ... Cite

A model of variability in brain stimulation evoked responses.

Journal Article Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference · December 1, 2012 The input-output (IO) curve of cortical neuron populations is a key measure of neural excitability and is related to other response measures including the motor threshold which is widely used for individualization of neurostimulation techniques, such as tr ... Cite

Muscle force development after low-frequency magnetic burst stimulation in dogs.

Journal Article Muscle Nerve · December 2012 INTRODUCTION: Magnetic stimulation allows for painless and non-invasive extrinsic motor nerve stimulation. Despite several advantages, the limited coupling to the target reduces the application of magnetic pulses in rehabilitation. According to experience ... Full text Link to item Cite

Circuit topology and control principle for a first magnetic stimulator with fully controllable waveform.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · 2012 Magnetic stimulation pulse sources are very inflexible high-power devices. The incorporated circuit topology is usually limited to a single pulse type. However, experimental and theoretical work shows that more freedom in choosing or even designing wavefor ... Full text Open Access Link to item Cite

A model of variability in brain stimulation evoked responses.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · 2012 The input-output (IO) curve of cortical neuron populations is a key measure of neural excitability and is related to other response measures including the motor threshold which is widely used for individualization of neurostimulation techniques, such as tr ... Full text Link to item Cite

Optimization of magnetic neurostimulation waveforms for minimum power loss.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · 2012 Magnetic stimulation is a key tool in experimental brain research and several clinical applications. Whereas coil designs and the spatial field properties have been intensively studied in the literature, the temporal dynamics of the field has received litt ... Full text Link to item Cite

A model of variability in brain stimulation evoked responses.

Journal Article Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference · 2012 Open Access Cite

Comparison of coil designs for peripheral magnetic muscle stimulation.

Journal Article J Neural Eng · October 2011 The recent application of magnetic stimulation in rehabilitation is often said to solve key drawbacks of the established electrical method. Magnetic fields cause less pain, allow principally a better penetration of inhomogeneous biologic tissue and do not ... Full text Link to item Cite

First theoretic analysis of magnetic drug targeting in the lung.

Journal Article IEEE Trans Biomed Eng · September 2010 Magnetic drug targeting in the bloodstream has been intensively studied recently, but also other interesting access and transport pathways fulfill the basic conditions for this method. More recently, magnetic drug targeting has even been accomplished for a ... Full text Link to item Cite

Force-pain relationship in functional magnetic and electrical stimulation of subjects with paresis and preserved sensation.

Journal Article Clin Neurophysiol · September 2010 OBJECTIVE: Using "painless" magnetic stimulation (FMS) to support the cycling of paretic subjects with preserved sensation is possible and potentially superior to electrical stimulation (FES). We investigated the dependence of the torque and the pain evoke ... Full text Link to item Cite

Biocompatibility studies of functionalized regioregular poly(3-hexylthiophene) layers for sensing applications.

Journal Article Macromol Biosci · April 8, 2010 There is a significant medical and biological need for cheap disposable analytical sensing devices, which can be used in clinical settings or medical research. Organic electronics based on polymeric materials, being suitable for large-area, low-cost, flexi ... Full text Link to item Cite

Fasciated nerve-muscle explants for in vitro comparison of magnetic and electrical neuromuscular stimulation.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · 2010 Neuromuscular stimulation has become a central technique for research and clinical efforts in rehabilitation, but available devices still do not show the needed performance in strength and selectivity for this approach. However, the knowledge about the exa ... Full text Link to item Cite

Analysis of a novel magnetic stimulation system: Magnetic Harmonic Multi-Cycle Stimulation (MHMS)

Journal Article 2nd International Conference on Biomedical and Pharmaceutical Engineering, ICBPE 2009 - Conference Proceedings · December 1, 2009 Magnetic stimulation is nowadays a standard instrument in research as well as clinical applications. But available systems still have some vital problems; these include the extreme energetic ineffectiveness and the poor flexibility of stimulation propertie ... Full text Cite

Biocompatibility studies of solution-processable organic thin-film transistors for sensing applications

Journal Article 2009 IEEE 3rd International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2009 · December 1, 2009 We present for the first time biofunctionalization and biocompatibibility studies of solution-processable organic semiconductors. Furthermore, low-operating voltage organic thin-film transistor devices have been fabricated, which can be used as sensors in ... Full text Cite

Temporal analysis of magnetic nerve stimulation-towards enhanced systems via virtualisation

Journal Article World Academy of Science, Engineering and Technology · October 1, 2009 The triumph of inductive neuro-stimulation since its rediscovery in the 1980s has been quite spectacular. In lots of branches ranging from clinical applications to basic research this system is absolutely indispensable. Nevertheless, the basic knowledge ab ... Cite

Organic field-effect transistors for biosensing applications

Journal Article Organic Electronics · January 1, 2009 Organic field-effect transistors (OFETs) with regioregular poly(3-hexylthiophene) (P3HT) have been designed and fabricated aiming at the lowest possible working point (i.e. the adjusted values of gate voltage and drain-source voltage) for the use as sensor ... Full text Cite

Peripheral inductive stimulation: Physical issues and advanced technological solutions

Journal Article IFMBE Proceedings · January 1, 2009 Since its invention in the early 1980s magnetic stimulation has established itself especially in the field of transcranial application, the first purpose. But in recent times the perspective successively widens also to the periphery with neuronal rehabilit ... Full text Cite

Respiration triggered magnetic drug targeting in the lungs.

Journal Article Annu Int Conf IEEE Eng Med Biol Soc · 2009 Lung cancer kills per year 1.3 million people worldwide. It is the most fatal cancer type as far as men are concerned and the second deadliest for women. One of the recent technologies to treat carcinomas in the lungs consists in delivering drugs through t ... Full text Link to item Cite

Breath synchronous magnetic drug targeting in the lungs

Journal Article IFMBE Proceedings · December 1, 2008 Lung cancer kills per year 1.3 million people worldwide. It is the most fatal cancer type as far as men are concerned and the second deadliest for women. One of the newest methods to treat carcinomas in the lungs consists in delivering drugs through the pu ... Full text Cite

Modular Power Electronics System for Charging an Electrically Operated Vehicle

Other US 10,391,870 B2 A power electronics system for charging at least one elec trically operated vehicle , wherein the power electronics system has at least two modules each having at least one terminal pair with DC output , at least one rectifier , at least one AC input , at ... Open Access Cite

Novel low-side/high-side gate drive and supply with minimum footprint, high power density, and low cost for silicon and wide-bandgap transistors

Journal Article IEEE Transactions on Power Electronics High-power silicon field-effect transistors as well as IGBTs and particularly wide-bandgap semi¬conductor transistors typically need negative turn-off voltage for a secure off-state, resilience to spurious turn on, and rapid transition through the saturati ... Full text Open Access Cite

A Generic Scheduling Algorithm for Low-Frequency Switching in Modular Multilevel Converters with Parallel Functionality

Journal Article IEEE Transactions on Power Electronics Since the introduction of modular multilevel converters (MMC), various additional features have been introduced for MMCs, among them parallel inter-module connectivity. However, such a parallel mode requires appropriate modulation and switching strategies ... Full text Open Access Link to item Cite

A Review of Multilevel Converters with Parallel Connectivity

Journal Article IEEE Transactions on Power Electronics Open Access Cite

Low-Cost Parameter Estimation Approach for Modular Converters and Reconfigurable Battery Systems Using Dual Kalman Filter

Journal Article IEEE Transactions on Power Electronics Modular converters or reconfigurable battery energy storage systems are a promising approach to eliminate the dependence on the weakest element in previously hard-wired battery packs and to combine heterogeneous batteries (so-called mixed-battery systems). ... Open Access Cite

Systems and Devices for Quiet Transcranial Magnetic Stimulaton and Method of Using Same

Other US 63/079,182 This invention discloses a magnetic stimulation coil (300) for magnetic stimulation in the brain and the peripheral nervous system with reduced sound emissions and a method for manufacturing such stimulation coil. The stimulation coil comprises at least on ... Open Access Cite