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22 March 2021 SSHI-based zero quiescent power control for the electromagnetic energy harvester
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Abstract
The article presents the development of a self-powered rectified electromagnetic energy harvester (EMEH) under low frequency excitations. To overcome the drawback of low output voltage across the small optimal load, it is proposed to use the transistor-based rectifier biased by the self-powered SECE-based piezoelectric energy harvester (PEH). In addition, the buck-boost converter controlled by the self-powered SSHI-based PEH is im- plemented for the maximum power point tracking. A semi-analytic model is developed for predicting the peak power and the optimal load used for designing the buck-boost converter. The prediction is then validated by experiment showing 1.5 mW optimal output power. Further, it is found that the 0.22 low rectified voltage is increased up to 2.5 V by the proposed SSHI-based voltage boosting technique. It offers advantages of zero quiescent power dissipation and the ease of tuning the input impedance of the buck-boost converter by varying the SSHI load impedance.
Conference Presentation
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Y. C. Lo and Y. C. Shu "SSHI-based zero quiescent power control for the electromagnetic energy harvester", Proc. SPIE 11588, Active and Passive Smart Structures and Integrated Systems XV, 115881E (22 March 2021); https://doi.org/10.1117/12.2582657
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