Mechanical/electrical power-aware impedance matching for design of capacitive vibration energy harvesters

Abstract : This study presents a systematic approach for power-aware design of an optimized capacitive vibration energy scavenger. The proposed method is based on the mechanical domain impedance analysis. First we investigated the mechanical properties (impedance) of the capacitive transducer/conditioning circuit block. We found that this impedance depends strongly on the energy state of the conditioning circuit. From this conclusion we derived a method allowing to find the conditioning circuit operating mode (voltages on the capacitors) maximizing the power yield for a given resonant MEMS transducer block, a given conditioning circuit and given external vibration parameters. This method was successfully applied on the system composed from a charge pump and an inductive flyback circuit. The study was validated by behavioral modeling in VHDL-AMS language environment.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-01299220
Contributor : Lip6 Publications <>
Submitted on : Thursday, April 7, 2016 - 1:35:18 PM
Last modification on : Thursday, March 21, 2019 - 1:13:05 PM

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  • HAL Id : hal-01299220, version 1

Citation

Dimitri Galayko, Philippe Basset. Mechanical/electrical power-aware impedance matching for design of capacitive vibration energy harvesters. PowerMEMS Workshop on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, Nov 2008, Sendai, Japan. pp.293-296. ⟨hal-01299220⟩

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