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Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications

Publication ,  Journal Article
Cassidy, IL; Scruggs, JT; Behrens, S; Gavin, HP
Published in: Journal of Intelligent Material Systems and Structures
November 1, 2011

This article reports on the design and experimental characterization of an electromagnetic transducer for energy harvesting from large structures (e.g., multistory buildings and bridges), for which the power levels can be above 100 W and disturbance frequencies below 1 Hz. The transducer consists of a back-driven ballscrew coupled to a permanent-magnet synchronous machine with power harvesting regulated via control of a four-quadrant power electronic drive. Design considerations between various subsystems are illustrated and recommendations in terms of minimal values are made for each design metric. Developing control algorithms to take full advantage of the unique features of this type of transducer requires a mechanical model that can adequately characterize the device's intrinsic nonlinear behavior. A new model is proposed that can effectively capture this behavior. Comparison with experimental results verifies that the model is accurate over a wide range of operating conditions. As such, the model can be used to assess the viability of the technology and to correctly design controllers to maximize power generation. To demonstrate the device's energy harvesting capability, impedance matching theory is used to optimize the power generated from a base-excited tuned mass damper. Both theoretical and experimental investigations are compared and the results are shown to match closely. © SAGE Publications 2011.

Duke Scholars

Published In

Journal of Intelligent Material Systems and Structures

DOI

EISSN

1530-8138

ISSN

1045-389X

Publication Date

November 1, 2011

Volume

22

Issue

17

Start / End Page

2009 / 2024

Related Subject Headings

  • Materials
  • 40 Engineering
  • 09 Engineering
 

Citation

APA
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ICMJE
MLA
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Cassidy, I. L., Scruggs, J. T., Behrens, S., & Gavin, H. P. (2011). Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications. Journal of Intelligent Material Systems and Structures, 22(17), 2009–2024. https://doi.org/10.1177/1045389X11421824
Cassidy, I. L., J. T. Scruggs, S. Behrens, and H. P. Gavin. “Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications.” Journal of Intelligent Material Systems and Structures 22, no. 17 (November 1, 2011): 2009–24. https://doi.org/10.1177/1045389X11421824.
Cassidy IL, Scruggs JT, Behrens S, Gavin HP. Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications. Journal of Intelligent Material Systems and Structures. 2011 Nov 1;22(17):2009–24.
Cassidy, I. L., et al. “Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications.” Journal of Intelligent Material Systems and Structures, vol. 22, no. 17, Nov. 2011, pp. 2009–24. Scopus, doi:10.1177/1045389X11421824.
Cassidy IL, Scruggs JT, Behrens S, Gavin HP. Design and experimental characterization of an electromagnetic transducer for large-scale vibratory energy harvesting applications. Journal of Intelligent Material Systems and Structures. 2011 Nov 1;22(17):2009–2024.
Journal cover image

Published In

Journal of Intelligent Material Systems and Structures

DOI

EISSN

1530-8138

ISSN

1045-389X

Publication Date

November 1, 2011

Volume

22

Issue

17

Start / End Page

2009 / 2024

Related Subject Headings

  • Materials
  • 40 Engineering
  • 09 Engineering