Comparison and design of power electronics transformers in 25 kHz–400 kHz range

The paper presents comparison and design considerations of power electronics transformers in 25 kHz–400 kHz range. Improved design algorithm consisting of 15 steps is applied. Five designs of power transformers under the same input parameters are realized based on different frequencies: 25kHz, 50kHz, 100kHz, 200kHz and 400kHz. The material used is ferrite (N87). The design is aimed at minimizing losses and volume of the component. A set of parameters is defined to compare the obtained design results including operating and construction parameters. The obtained design results are verified by carried out simulations using FEM. Design conclusions and guidelines are derived based on the comparison of the carried out designs regarding the influence of operating frequency on the total parameters of the power transformers.