Skip to main content

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

Publication ,  Journal Article
Li, Z; Ricardo Lizana, F; Yu, Z; Sha, S; Peterchev, AV; Goetz, SM
Published in: 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. Thus, low-frequency operations of MMCs, e.g., for motor drives, require injecting common-mode voltages and circulating currents, and strict dc voltage output relative to ground is impossible. To address this problem, this paper introduces a novel module topology that allows parallel module connectivity in addition to the series and bypass states. The parallel state directly transfers power across the modules and arms to cancel the power fluctuations and hence suppresses the capacitor voltage ripple. The proposed series/parallel converter can operate at a wide frequency range down to dc without common-mode voltages or circulating currents; it also allows sensorless operation and full utilization of the components at higher output frequencies. We present detailed simulation and experiment results to characterize the advantages and limitations of the proposed solution.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

IEEE Transactions on Power Electronics

DOI

EISSN

1941-0107

ISSN

0885-8993

Publication Date

October 1, 2019

Volume

34

Issue

10

Start / End Page

9854 / 9865

Related Subject Headings

  • Electrical & Electronic Engineering
  • 4009 Electronics, sensors and digital hardware
  • 4008 Electrical engineering
  • 0906 Electrical and Electronic Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Li, Z., Ricardo Lizana, F., Yu, Z., Sha, S., Peterchev, A. V., & Goetz, S. M. (2019). A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation. IEEE Transactions on Power Electronics, 34(10), 9854–9865. https://doi.org/10.1109/TPEL.2019.2891052
Li, Z., F. Ricardo Lizana, Z. Yu, S. Sha, A. V. Peterchev, and S. M. Goetz. “A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation.” IEEE Transactions on Power Electronics 34, no. 10 (October 1, 2019): 9854–65. https://doi.org/10.1109/TPEL.2019.2891052.
Li Z, Ricardo Lizana F, Yu Z, Sha S, Peterchev AV, Goetz SM. A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation. IEEE Transactions on Power Electronics. 2019 Oct 1;34(10):9854–65.
Li, Z., et al. “A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation.” IEEE Transactions on Power Electronics, vol. 34, no. 10, Oct. 2019, pp. 9854–65. Scopus, doi:10.1109/TPEL.2019.2891052.
Li Z, Ricardo Lizana F, Yu Z, Sha S, Peterchev AV, Goetz SM. A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation. IEEE Transactions on Power Electronics. 2019 Oct 1;34(10):9854–9865.

Published In

IEEE Transactions on Power Electronics

DOI

EISSN

1941-0107

ISSN

0885-8993

Publication Date

October 1, 2019

Volume

34

Issue

10

Start / End Page

9854 / 9865

Related Subject Headings

  • Electrical & Electronic Engineering
  • 4009 Electronics, sensors and digital hardware
  • 4008 Electrical engineering
  • 0906 Electrical and Electronic Engineering