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Sensors 2015, 15(11), 29192-29208;

An Inductorless Self-Controlled Rectifier for Piezoelectric Energy Harvesting

University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
Author to whom correspondence should be addressed.
Academic Editor: Davide Brunelli
Received: 23 June 2015 / Revised: 7 October 2015 / Accepted: 13 November 2015 / Published: 19 November 2015
Full-Text   |   PDF [2775 KB, uploaded 19 November 2015]   |  


This paper presents a high-efficiency inductorless self-controlled rectifier for piezoelectric energy harvesting. High efficiency is achieved by discharging the piezoelectric device (PD) capacitance each time the current produced by the PD changes polarity. This is achieved automatically without the use of delay lines, thereby making the proposed circuit compatible with any type of PD. In addition, the proposed rectifier alleviates the need for an inductor, making it suitable for on-chip integration. Reported experimental results show that the proposed rectifier can harvest up to 3.9 times more energy than a full wave bridge rectifier. View Full-Text
Keywords: piezoelectric energy harvesting; AC-DC power conversion; SSHI; rectifier piezoelectric energy harvesting; AC-DC power conversion; SSHI; rectifier

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Lu, S.; Boussaid, F. An Inductorless Self-Controlled Rectifier for Piezoelectric Energy Harvesting. Sensors 2015, 15, 29192-29208.

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