A Survey on Rectifier for PE energy harvesting to maximize the potency transfer from the transducer to the load

Abstract

This paper presents a self-powered rectifier for piezoelectric energy harvesting applications, and the key conception of the proposed system is to reset the transducer capacitor at optimal instants to maximize the extracted potency. The proposed rectifier consists of two switches and two active diodes. The switches discharge the transducer capacitor at optimal instants two times for every cycle. The active diodes are predicated on op-amps with a preset dc offset, which reduces the voltage drop and the leakage current and eschews instability. In advisement, the controller for the proposed rectifier is simple to reduce the circuit involution and the potency dissipation. The proposed rectifier was designed and fabricated in 0.18-µm CMOS technology. Quantified results designate that it achieves high power efficiency and the amount of potency extracted by the proposed rectifier is more astronomically immense when compared with the conventional rectifiers. The proposed rectifier does not require any off chip components to enable a full chip integration.