SSHI-based zero quiescent power control for the electromagnetic energy harvester
Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
11588
Date Issued
2021
Author(s)
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 implemented 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. ? 2021 SPIE. All rights reserved.
Subjects
Electric current regulators; Electric rectifiers; Electromagnetic waves; Energy harvesting; Integrated control; Maximum power point trackers; Power control; Analytic modeling; Buck boost converter; Input impedance; Low output voltage; Maximum Power Point Tracking; Piezoelectric energy harvesters; Rectified voltage; Voltage boosting; DC-DC converters
SDGs
Type
conference paper