A 10-mV-Startup-Voltage Thermoelectric Energy Harvesting System With a Piezoelectric Starter

Conference paper (2022)

Authors

Ruizhi Wang Student
Yansong Liang Student
S. Du Electronic Instrumentation - EEMCS
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2022 Ruizhi Wang, Yansong Liang, S. Du
DOI
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https://doi.org/10.1109/ISCAS48785.2022.9937554
Maximum power point tracking Thermoelectric energy harvesting Piezoelectric generator Cold-startup
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Published Date

2022

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

An ultra-low-startup-voltage thermoelectric energy harvesting system assisted by a piezoelectric generator (PEG) is presented in this paper. When the energy harvesting system is implemented in a place where there is mechanical vibration, the associated PEG can generate a stable clock signal and drive the boost converter to start from the cold state even at extremely low thermoelectric generator (TEG) voltage. The proposed system is designed and simulated in a 180-nm BCD process. The simulations show that the proposed system can start the TEG system from the cold state from as low as 10 mV of TEG voltage while keeping a 63.9% efficiency. The peak power conversion efficiency is achieved at 74.9% when the TEG voltage is 50 mV.