An efficient AC/DC boost converter for low-rating energy harvesting systems

Generally two-stage converters are less efficient for low-voltage systems. Bridge rectifiers are having disadvantage of ripple current generation at load generation. In this paper an efficient ac-dc converter is employed for directly conversion of low rating ac supply to high voltage dc power with high efficiency. PI controller is used for Control technique to have efficient operation, and is having easy of controlling. In the designing of proposed power converter the buck-boost converter and boost converter are connected in parallel to each other. The converters are operated in positive half-cycle to get operating parameters relations. A selfstarting operation control circuit is designed for converter. Simulation results are described for proposed converter to detailed observation by using MATLAB/simulink software.