Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE
Conference_Location :
Fort Worth, TX
Print_ISBN :
978-1-4244-8084-5
DOI :
10.1109/APEC.2011.5744630
