This paper presents a soft switched interleaved fly back converter for fuel cell systems. The proposed topology consists of a three stage fly back converter with three transformers. Because of interleaved operation of converter, the output current ripple will be reduced. The proposed converter can approximately share the total load current between the two secondaries. Therefore, the transformer copper loss and rectifier diode conduction loss can be decreased. Moreover, it is based on zero voltage switching technique in which switching takes place when the voltage wave attains zero thus reducing the switching losses. This improves the overall efficiency of the converter. Detailed analysis has been done to investigate the benefits of interleaved flyback converter compared to the conventional interleaved boost converter. Simulation study for the Interleaved Flyback Converter and IBC has been studied using MATLAB/SIMULINK. Hardware prototype is built to validate the results.
Interleaved Flyback converter, soft switching, ripple & losses
