Analysis of voltage multiplier circuit simulation for rain energy harvesting using circular piezoelectric

Piezoelectric energy harvester extracts energy based on the magnitude of vibration source and the resonant frequency. In order to get the maximum voltage output, the piezoelectric must receive higher vibration to obtain the frequency near at its resonant frequency. However, it is difficult to obtain the high and stable of vibration from the surrounding to impact on the piezoelectric. Therefore, in order to fix this problem, the voltage multiplier circuit is designed to improve the magnitude of the output gained from the piezoelectric. In order to analyze the potential output produce from rain energy, this paper present three types of circuit for investigation which are voltage doubler, Cockcroft Walton Cascade Voltage Doubler (CWCVD) and Karthaus Fischer Cascade Voltage Doubler (KFCVD). The output voltage and current were investigated to obtain the optimum output based on the result of the simulation. The circuit then can be applied for rain energy harvesting.