Structural Effects and Energy Conversion Efficiency of Power Harvesting

摘要: The concept of power harvesting works towards developing self-powered devices that do not require replaceable supplies. One important parameter defining the performance a piezoelectric system is efficiency system. However, an accepted definition energy does currently exist. This article will develop new for system, which rather than being defined through conservation as ratio fed into to maintain steady state output power, we consider strain over each cycle output. analogous material loss factor. Simulations be performed demonstrate validity and show maximum occurs at matched impedance; however, materials with high electromechanical coupling, generated near open- closed-circuit resona...