Abstract: A single stage ac-dc power electronic converter is proposed to efficiently manage the energy harvested from electromagnetic generators. The conventional ac-dc converters for energy harvesting system with diode rectifiers suffers considerable voltage drop results increase in power loss of circuitry and complexity. The proposed topology combines a boost converter and buck boost converter to condition the positive and negative half portions of the input ac voltage, respectively. The proposed converter avoids the use of bridge rectifier and converts the ac input to the required dc output. By using Fuzzy compensator we can increase the dc output voltage compare to PI compensator system. The simulation is done with the help of MATLAB using simulink.

Keywords: Bridgeless, Boost, AC/DC conveter, Fuzzy compensator.