Insulation structure analysis of high-frequency and high-voltage rectifier transformer

The rectifier transformer of high-frequency high power-rating switching power supplies has a drawback of low power density due to the rigorous requirements of high voltage insulation. With some tests of a model transformer, the potential distribution of the high power transformers was analyzed and the unfavorable factors affecting their potential distribution were investigated in this paper. Meanwhile, the distribution of the leakage magnetic field of the transformer is also investigated which shows that the insulation distance has a significant impact on leakage. Finally, some improvement measures are proposed based on the results above.