Piezoelectric mechanical vibration recuperator

Abstract

Piezoelectric mechanical vibration recuperator comprises a stack of piezoelectric elements in the form of piezoelectric plates, mechanically coupled to the elements of the shock absorber and electrically connected to a bridge rectifier, the output of which is connected to a smoothing capacitor and then to an energy storage device. Wherein, the input of the voltage converter is connected to the output of the smoothing capacitor, and the output of the voltage converter is connected to the input of the energy storage device, to the output of which the microelectronic systems of the vehicle are connected. The energy output is calculated using the formula describing the equivalent circuit of the piezoelectric converter, taking the load into account: ,(1) where Cp is the capacitance of the piezoelectric plates, F; RL is the load resistance, Ohm ü(t) is the instantaneous voltage value, V; x1(t), x2(t) are the deformations of the piezoelements, m; i(t) is the current, A.