Optimum design of winding model of flyback high-frequency transformer

High-frequency transformer is the key component of the flyback converter,and its efficiency is directly related to the converter.In order to improve the inverter's efficiency,the optimum design of high-frequency transformer becomes very important.A 2D finite element model of the winding structure is built up to calculate the eddy current losses and leakage inductance caused by the different structure of flyback transformer winding.The laboratory prototype of the high frequency transformer has been designed,and the experimental results show that the transformer winding structure is reasonable,low leakage inductance,high efficiency and perfect output voltage waveform.