Embodiments of the present invention provide a system and a method for increasing the harvested energy from a piezoelectric element exposed to environmental vibrations via a two-prong system. In a first prong, a cantilever beam is tapered and shaped so as to increase and provide an approximately uniform strain on and along the beam, thus resulting in increased voltage. In a second prong of the system and method, a voltage compensating circuit, when used with a voltage inversion circuit of the prior art, increases the harvested power by injecting current to the piezoelectric element after each voltage inversion so as to increase the voltage level.

Title
System and method for harvesting energy from environmental vibrations
Application Number
12/363082
Publication Number
20100194239
Application Date
January 30, 2009
Publication Date
August 5, 2010
Inventor
Jagannathan Sarangapani
Rolla
MO, US
Shahab Mehraeen
Rolla
MO, US
Agent
Hovey Williams
KS, US
Assignee
The Curators of the University of Missouri
MO, US
IPC
H01L 41/113
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