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Abstract
Impedance matching techniques have been shown to extract close to the maximum theoretical power from kinetic energy harvesters. The output impedance of electromagnetic energy harvesters is frequency-dependent, which must be compensated for by the interfacing power electronics. Switched mode power converters are used to synthesise optimum, matched load impedance, controlled typically by varying duty ratio pulse width modulated gate signals. The emulated input impedance of the power converter is affected by factors such as the input and output voltage levels. In this paper, the non-synchronous boost rectifier, operated entirely in discontinuous current conduction mode, is controlled dynamically to ensure that the emulated input resistance remains at a set value under varying input and output conditions. This is achieved by employing a feed-forward control scheme that is based on calculating the time-varying optimum duty ratio as a function of the excitation frequency, the generated voltage and the converter output voltage, following the analytically derived equations. Experimental results are obtained using the proposed feed-forward control method implemented on a real-time platform. The results demonstrate the effectiveness of the presented control in terms of emulating a set resistance, and the average power that can be extracted using optimum resistance matching over a range of excitation frequencies.
Original language | English |
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Title of host publication | 2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013) |
Place of Publication | NEW YORK |
Publisher | IEEE Computer Society |
Pages | 3081-3086 |
Number of pages | 6 |
ISBN (Print) | 978-1-4673-4355-8 |
Publication status | Published - 2013 |
Event | 28th Annual IEEE Applied Power Electronics Conference and Exposition ()APEC) - Long Beach, Canada Duration: 17 Mar 2013 → 21 Mar 2013 |
Publication series
Name | Annual IEEE Applied Power Electronics Conference and Exposition (APEC) |
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Publisher | IEEE |
ISSN (Print) | 1048-2334 |
Conference
Conference | 28th Annual IEEE Applied Power Electronics Conference and Exposition ()APEC) |
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Country/Territory | Canada |
Period | 17/03/13 → 21/03/13 |
Fingerprint
Dive into the research topics of 'Resistive Matching with a Feed-Forward Controlled Non-Synchronous Boost Rectifier for Electromagnetic Energy Harvesting'. Together they form a unique fingerprint.Projects
- 1 Finished
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Next Generation Energy-Harvesting Electronic Systems: Holistic Approach 1763
Stark, B. H. (Principal Investigator)
1/04/10 → 1/07/13
Project: Research