Design and optimization of an adaptive non-linear piezoelectric energy harvester

Author

Paing, Thurein ; Zane, Regan

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Colorado at Boulder, Boulder, CO, USA

fYear

2011

fDate

6-11 March 2011

Firstpage

412

Lastpage

418

Abstract

This paper presents an adaptive non-linear piezoelectric energy harvester that uses the synchronous electric charge extraction (SECE) technique with an optimized flyback converter power stage. The SECE flyback converter is designed after a thorough analysis of power stage and control power losses and then tested with both synchronous and asynchronous power stage switching. Experimental results with a piezoelectric cantilever show an output power increase of 50% with an acceleration of 160 mg compared to the standard rectifier-capacitor technique. The results closely match the power losses predicted by the theoretical analysis.

Keywords

electric charge; energy harvesting; piezoelectric devices; power convertors; adaptive non-linear piezoelectric energy harvester; asynchronous power stage switching; flyback converter power stage; piezoelectric cantilever; standard rectifier-capacitor technique; synchronous electric charge extraction; Converters; Generators; Logic gates; Microcontrollers; Switches; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE

Conference_Location

Fort Worth, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-8084-5

Type

conf

DOI

10.1109/APEC.2011.5744630

Filename

5744630