Calculation of the Core Loss of High-Frequency High-Voltage Transformer Considering the Influence of Temperature

In this paper, a finite element analysis (FEA) method based on complex permeability is proposed to analyze the eddy current loss and hysteresis loss of the ultra-thin strip wound magnetic core, which is used in high-frequency highvoltage (HFHV) transformers. The coefficients of the complex permeability are expressed as temperature equations to simulate the influence of temperature on the core loss. By layering the iron core, the problem of uneven magnetic flux distribution in the strip-wound core is solved. The experimental results are in good agreement with the simulation, and the errors between them are less than 5.1%.