A study on design and optimization procedure of high frequency transformer for module-integrated converter

The module-integrated converter (MIC) research is interested in the small-scale photo-voltaic (PV) generation. It is capable of efficient power generation by operating at maximum power point of each PV module. In this system, the high frequency transformer should be compacted and has high efficiency characteristics to attach on the backside of PV module. However, the high frequency transformer is tallest and biggest component in converter circuit. This paper presented the core and winding structure optimization procedure to improve the efficiency of high frequency transformer in compact size. In order to obtain the accurate finite element analysis (FEA) result, the converter circuit is considered in the FEA model. The results are verified by testing the prototypes.