Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8515
Title: Loosely power flow control scheme for piezoelectric energy harvesting
Authors: Lee, CK
Chan, PKW
Or, SW 
Issue Date: 2010
Publisher: Institution of Engineering and Technology
Source: Electronics letters, 2010, v. 46, no. 25, p. 1689-1691 How to cite?
Journal: Electronics letters 
Abstract: Piezoelectric energy harvesting generally employs a maximum power point tracking (MPPT) control scheme in the DC-to-DC converter in order to continuously track to the maximum power point (MPP) voltage of the piezoelectric energy harvester (PEH). Owing to the high power consumption of the MPPT-based control circuit, the efficiency of the converter remains at an essentially low level. Proposed is a loosely power flow (LPF) control scheme to intermittently operate the converter near the MPP voltage of the PEH. Experimental verification on a 22μW PEH prototype finds that the power consumption of the LPF-based control circuit is as low as the quiescent power of the converter and the efficiency of the converter is as high as 56%.
URI: http://hdl.handle.net/10397/8515
ISSN: 0013-5194
EISSN: 1350-911X
DOI: 10.1049/el.2010.2515
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