Thermal Analysis of Permanent Magnet Synchronous Motor under Different Working Conditions Based on Thermal Network

This paper first used CFD model to accurately estimate the thermal convection coefficient under different working conditions and fitted the losses of permanent magnet synchronous motors under different working conditions using formulas, and an equivalent thermal network model was established to analyze the temperature of the motor under different working conditions. Finally, an inner-mounted permanent magnet synchronous motor with 4-poles and 24-slots was used as the prototype, and the simulated temperature results were compared with real temperature datas. The results indicate that this method can accurately predict the temperature of the motor under different working conditions.