Title
A Thermoelectric Energy Harvesting System Assisted by A Piezoelectric Transducer Achieving 10-mV Cold-Startup and 82.7% Peak Efficiency
Author
Lu, T. (TU Delft Electronic Instrumentation)
Wang, Ruizhi (Student TU Delft)
Tang, Z. (TU Delft Electronic Instrumentation)
Zou, Yiwei (Student TU Delft; Rice University)
Yue, X. (TU Delft Electronic Instrumentation)
Liang, Yansong (Student TU Delft; University of California)
Gong, Haoran (Student TU Delft)
Liu, Shurui (Student TU Delft)
Chen, Zhiyuan (Fudan University)
Liu, Xun (Chinese University of Hong Kong)
Du, S. (TU Delft Electronic Instrumentation) 
Date
2024
Abstract
This article presents a 10mV-startup-voltage thermoelectric energy harvesting system, assisted by a piezoelectric generator (PEG) as a cold starter. It exploits the fact that when a thermoelectric energy harvesting system is implemented in a place where kinetic energy is also present, the PEG starter can provide a clock signal to start the system. Thanks to the high output impedance of the PEG, the generated clock voltage can easily go over several hundreds of mV, which can be used to drive the boost converter to harvest thermoelectric energy even at an extremely low thermoelectric generator (TEG) voltage. The proposed system was fabricated in a 180-nm BCD process. The measurement results show that the TEG system can start up from the cold state with a TEG voltage as low as 10 mV while maintaining a 63.9% efficiency. The peak power conversion efficiency reaches 83.7% when the TEG voltage is 55 mV.
Subject
Thermoelectric energy harvesting
piezoelectric generator (PEG)
thermoelectric energy generator (TEG)
DC-DC converter
boost converter
cold-startup
maximum power point tracking (MPPT)
To reference this document use:
http://resolver.tudelft.nl/uuid:6c9ac44c-5d6d-477f-a22a-2202de6a11f6
DOI
https://doi.org/10.1109/TPEL.2024.3362366
Embargo date
2024-08-12
ISSN
1941-0107
Source
IEEE Transactions on Power Electronics, 39 (5), 6352-6363
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2024 T. Lu, Ruizhi Wang, Z. Tang, Yiwei Zou, X. Yue, Yansong Liang, Haoran Gong, Shurui Liu, Zhiyuan Chen, Xun Liu, S. Du, More Authors