15 April 2016 Power conditioning for low-voltage piezoelectric stack energy harvesters
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Low-power vibration and acoustic energy harvesting scenarios typically require a storage component to be charged to enable wireless sensor networks, which necessitates power conditioning of the AC output. Piezoelectric beam-type bending mode energy harvesters or other devices that operate using a piezoelectric element at resonance produce high voltage levels, for which AC-DC converters and step-down DC-DC converters have been previously investigated. However, for piezoelectric stack energy harvesters operating off-resonance and producing low voltage outputs, a step-up circuit is required for power conditioning, such as seen in electromagnetic vibration energy scavengers, RF communications, and MEMS harvesters. This paper theoretically and experimentally investigates power conditioning of a low-voltage piezoelectric stack energy harvester.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
E. Skow, E. Skow, S. Leadenham, S. Leadenham, K. A. Cunefare, K. A. Cunefare, A. Erturk, A. Erturk, "Power conditioning for low-voltage piezoelectric stack energy harvesters", Proc. SPIE 9799, Active and Passive Smart Structures and Integrated Systems 2016, 97990P (15 April 2016); doi: 10.1117/12.2219211; https://doi.org/10.1117/12.2219211

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