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http://dx.doi.org/10.7471/ikeee.2015.19.2.210

An Auto-Switching Energy Harvesting Circuit Using Vibration and Thermoelectric Energy  

Yoon, Eun-Jung (Dept. of Electronics Engineering, Incheon National University)
Yu, Chong-Gun (Dept. of Electronics Engineering, Incheon National University)
Publication Information
Journal of IKEEE / v.19, no.2, 2015 , pp. 210-218 More about this Journal
Abstract
In this paper an auto-switching energy harvesting circuit using vibration and thermoelectric energy is proposed. Since the maximum power point of a thermoelectric generator(TEG) output and a vibration device(PEG) output is 1/2 of their open-circuit voltage, an identical MPPT controller can be used for both energy sources. The proposed circuit monitors the outputs of the TEG and PEG, and chooses the energy source generating a higher output voltage using an auto-switching controller, and then harvests the maximum power from the selected device using the MPPT controller. The proposed circuit is designed in a $0.35{\mu}m$ CMOS process and its functionality has been verified through extensive simulations. The designed chip occupies $1.4mm{\times}1.2mm$ including pads.
Keywords
Auto-Switching; MPPT; Energy Harvesting; Vibration Energy; Thermoelectric Energy;
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Times Cited By KSCI : 1  (Citation Analysis)
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