TY - GEN
T1 - A Highly Efficient Auto-Polarity Energy Harvesting Circuit Based on Reconfigurable TEG Array for Wearable Applications
AU - Fan, Zihao
AU - Li, Yunhao
AU - Wan, Qiping
AU - Yang, Su
AU - Tao, Xiaoming
AU - Gao, Yuan
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper presents an auto-polarity thermo-electric energy harvesting circuit based on the reconfigurable thermoelectric generator (TEG) array. The auto-polarity function is achieved by simply altering the operating mode of the inverse current detector without adding extra power overhead and hardware cost. In addition, the proposed circuit consists of the TEG array and switches, removing the need for bulky inductor-based or switched-capacitor DC-DC converters. Hill-climbing algorithm is used for maximum power point tracking (MPPT). The operating frequency of the system is 0.2 Hz with overall dynamic power consumption of only 1.2mW. Over a wide range of temperature gradients, the static power is less than 0.1μW with a peak efficiency of 99.6%.
AB - This paper presents an auto-polarity thermo-electric energy harvesting circuit based on the reconfigurable thermoelectric generator (TEG) array. The auto-polarity function is achieved by simply altering the operating mode of the inverse current detector without adding extra power overhead and hardware cost. In addition, the proposed circuit consists of the TEG array and switches, removing the need for bulky inductor-based or switched-capacitor DC-DC converters. Hill-climbing algorithm is used for maximum power point tracking (MPPT). The operating frequency of the system is 0.2 Hz with overall dynamic power consumption of only 1.2mW. Over a wide range of temperature gradients, the static power is less than 0.1μW with a peak efficiency of 99.6%.
KW - auto-polarity controller
KW - energy harvesting (EH)
KW - maximum power point tracking (MPPT)
KW - reconfigurable switch array
KW - thermoelectric generator (TEG)
UR - http://www.scopus.com/inward/record.url?scp=85167667879&partnerID=8YFLogxK
U2 - 10.1109/ISCAS46773.2023.10181446
DO - 10.1109/ISCAS46773.2023.10181446
M3 - Conference article published in proceeding or book
AN - SCOPUS:85167667879
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - ISCAS 2023 - 56th IEEE International Symposium on Circuits and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 56th IEEE International Symposium on Circuits and Systems, ISCAS 2023
Y2 - 21 May 2023 through 25 May 2023
ER -