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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2018 Vol.19 No.2 P.285-296
Thermal energy harvesting circuit with maximum power point tracking control for self-powered sensor node applications
Abstract: We present a simple implementation of a thermal energy harvesting circuit with the maximum power point tracking (MPPT) control for self-powered miniature-sized sensor nodes. Complex start-up circuitry and direct current to direct current (DC-DC) boost converters are not required, because the output voltage of targeted thermoelectric generator (TEG) devices is high enough to drive the load applications directly. The circuit operates in the active/asleep mode to overcome the power mismatch between TEG devices and load applications. The proposed circuit was implemented using a 0.35-μm complementary metal-oxide semiconductor (CMOS) process. Experimental results confirmed correct circuit operation and demonstrated the performance of the MPPT scheme. The circuit achieved a peak power efficiency of 95.5% and an MPPT accuracy of higher than 99%.
Key words: Thermoelectric energy; Energy harvesting; Maximum power point tracking (MPPT) control; Self-powered system; Sensor node
Chinese Summary <21> 为自供能传感器节点供电的最大功率点跟踪控制热能收集电路
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References:
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DOI:
10.1631/FITEE.1601181
CLC number:
TM356
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On-line Access:
2018-04-09
Received:
2016-04-25
Revision Accepted:
2016-09-08
Crosschecked:
2018-02-19
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