Based on the finite element simulation technology,the magnetothermal coupling method was used to study the temperature rise of ring and EI type PC40 ferrite cores.Firstly,the finite element analysis method was used to simulate the electromagnetic field and temperature field of the ring core.The simulation results of core loss and temperature are in good agreement with the corresponding experimental results with the error of within 10%.Secondly,the temperature rise of more complicated EI ferrite core was further simulated by this method,and the temperature rise of different positions of EI core was obtained.The magnetothermal coupling method is a suitable method to determine the hot spot position and temperature rise in the core.Therefore,appropriate heat dissipation measures can be taken in the device design to improve the stability and reliability of the performance of power electronic components.
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