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- W2058274311 abstract "The concept of power harvesting works towards developing self-powered devices that do not require replaceable powersupplies. One important parameter defining the performance of a piezoelectric power harvesting system is theefficiency of the system. However, an accepted definition of the energy harvesting efficiency does not currently exist.This article will develop a new definition for the efficiency of an energy harvesting system which rather than beingdefined through energy conservation as the ratio of the energy fed into the system to maintain the steady state to theoutput power, we consider the ratio of the strain energy over each cycle to the power output. This new definition isanalogous to the material loss factor. Simulations will be performed to demonstrate the validity of the efficiency andwill show that the maximum efficiency occurs at the matched impedance; however, for materials with highelectromechanical coupling the maximum power is generated at the near open and closed-circuit resonances with a lowerefficiency." @default.
- W2058274311 created "2016-06-24" @default.
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- W2058274311 date "2009-03-26" @default.
- W2058274311 modified "2023-09-23" @default.
- W2058274311 title "On structural effects and energy conversion efficiency of power harvesting" @default.
- W2058274311 doi "https://doi.org/10.1117/12.814891" @default.
- W2058274311 hasPublicationYear "2009" @default.
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