DocumentCode :
802426
Title :
Toward energy harvesting using active materials and conversion improvement by nonlinear processing
Author :
Guyomar, Daniel ; Badel, Adrien ; Lefeuvre, Elie ; Richard, Claude
Author_Institution :
Lab. de Genie Electrique et Ferroelectricite, Inst. Nat. des Sci. Appliquees, Villeurbanne, France
Volume :
52
Issue :
4
fYear :
2005
fDate :
4/1/2005 12:00:00 AM
Firstpage :
584
Lastpage :
595
Abstract :
This paper presents a new technique of electrical energy generation using mechanically excited piezoelectric materials and a nonlinear process. This technique, called synchronized switch harvesting (SSH), is derived from the synchronized switch damping (SSD), which is a nonlinear technique previously developed to address the problem of vibration damping on mechanical structures. This technique results in a significant increase of the electromechanical conversion capability of piezoelectric materials. Comparatively with standard technique, the electrical harvested power may be increased above 900%. The performance of the nonlinear processing is demonstrated on structures excited at their resonance frequency as well as out of resonance.
Keywords :
damping; direct energy conversion; electric generators; piezoelectric devices; active materials; conversion improvement; electrical energy generation; electromechanical conversion capability; energy harvesting; mechanical structures; mechanically excited piezoelectric materials; nonlinear process; nonlinear processing; resonance frequency; synchronized switch damping; synchronized switch harvesting; vibration damping; Damping; Frequency synchronization; Mechanical sensors; Piezoelectric materials; Resonance; Resonant frequency; Stress; Switches; Vibrations; Voltage;
fLanguage :
English
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-3010
Type :
jour
DOI :
10.1109/TUFFC.2005.1428041
Filename :
1428041
Link To Document :
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