Back to Search
Start Over
An Efficient Polarity Detection Technique for Thermoelectric Harvester in L-based Converters.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Mar2017, Vol. 64 Issue 3, p705-716. 12p. - Publication Year :
- 2017
-
Abstract
- This paper presents a new method for detecting and reversing the polarity of a low-voltage thermoelectric generator (TEG) in inductor-based converters. The proposed technique makes use of the inductor response to a voltage change due to the flip in the TEG polarity. The inductor voltage provides two distinguishable states which correspond to the normal and the reversed TEG polarity. A switch matrix circuit is then used to correct the polarity by physically reversing the TEG connection. The detection circuit along with the switch matrix provide a positive input voltage from the TEG to the inductor-based converter. The proposed technique is an efficient polarity detection with all-digital implementation, fully integrated, small area and power overhead. The prototype chip is fabricated in 65-nm CMOS and occupies an area of 0.09 mm2. Measurement results confirm a maximum efficiency of 70% at 50 mV TEG voltage and 40~\mu \text A output current. The proposed technique is part of an autonomous thermal energy harvesting system that detects and corrects the TEG polarity. [ABSTRACT FROM AUTHOR]
- Subjects :
- *POLARITY (Physics)
*ENERGY harvesting
*THERMOELECTRIC generators
Subjects
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 64
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 121551384
- Full Text :
- https://doi.org/10.1109/TCSI.2016.2619758