Synthesizing load impedance to frequency-tune an electro-mechanical vibration energy harvester

James Bowden*, Stephen G. Burrow, Andrea Cammarano, Paul D. Mitcheson

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Energy harvesters based upon resonant mass-springdamper systems can only generate useful power over a narrow range of excitation frequencies. This is a significant limitation in applications where the vibration source frequency changes over time. In this paper an active electrical load is presented which can overcome the bandwidth limitations by parametrically tuning the overall harvester system. The electrical tuning technique synthesizes an optimum reactive load with high-efficiency switch-mode electronics, which also provides rectification, feeding power harvested into a DC store. The method is shown to be effective at increasing the power frequency bandwidth of resonant type harvesters, and offers the capability of autonomous operation. The theoretical basis for the technique is presented, and verified with experiment results. The paper illustrates the challenges of implementing the power electronic converter for a low quiescent power overhead and in choosing the control architecture and tuning algorithms.

Original languageEnglish
Title of host publicationASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012
Pages1263-1268
Number of pages6
Volume1
EditionPARTS A AND B
DOIs
Publication statusPublished - 1 Dec 2012
EventASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012 - Chicago, IL, United States
Duration: 12 Aug 201212 Aug 2012

Conference

ConferenceASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012
CountryUnited States
CityChicago, IL
Period12/08/1212/08/12

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    Bowden, J., Burrow, S. G., Cammarano, A., & Mitcheson, P. D. (2012). Synthesizing load impedance to frequency-tune an electro-mechanical vibration energy harvester. In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2012 (PARTS A AND B ed., Vol. 1, pp. 1263-1268) https://doi.org/10.1115/DETC2012-71130