Design of Higher Order Converter for Piezo Electric Energy Harvesting Applications

Abstract

Conditioning the output voltage of Piezo-electric crystal is very important for Energy harvesting process. The productive method to collect the energy from the framework for the most part relies upon its interfacing hardware. It is important to portray and streamline the interfacing circuit for expanding the yield power. The circuit parameters such as duty cycle, switching frequency, inductance and load resistance have been portrayed and streamlined to improve the effectiveness of the overall system. A higher order Cuk Converter is proposed for integrating piezoelectric energy harvester (PEH) and energy storage elements or load directly. The circuit has been simulated using Matlab Simulink. The supply voltage of the piezoelectric transducer is an impulse force and the regulated output DC voltage is obtained as 1.3V from a single crystal (PZT-5A) and a total of 5.2V is obtained by cascading five crystals. The output voltage of the crystal stack is rectified and boosted using Cuk converter. The operating range of the system is increased by employing PI controller, Sliding mode controller and Hysteresis controller.