Analysis of Low Voltage Bridgeless AC DC Energy Conversion

Abstract: The energy source for energy harvesting micro-generators is present as ambient background. Energy harvesting micro generator provide a very small amount of power for low-energy electronic devices. This paper presents the analysis of electromagnetic resonant micro-generator for the low voltage bridgeless AC DC energy conversion. The proposed converter model uses parallel connected boost and buck-boost converters to step up and rectify the low AC voltage fed from the micro-generator output to higher DC voltage to be fed to an electronic load. The positive and negative half cycle of the AC voltage obtained by the micro-generator is processed by the boost and the buck-boost converters respectively. Detailed analysis of the boost and the buck boost converter of the proposed model are carried out to suit the specifications of the micro-generator output and the load.

Keywords: micro-generator, boost converter, low voltage, AC DC energy conversion, boost converter, MOSFET.