Thermal analysis of PMSM based on lumped parameter thermal network method

The increase of motor capacity cause the rise of motor internal temperature, the high temperature severely affected performance and reliable operation of motor. Considering influence of the permanent magnet eddy current loss on thermal field of motor, thermal field of PMSM has been analyzed by Lumped Parameter Thermal Network Method(LPTN), the thermal network model of 38 nodes has been established. Finally, the correctness of model is verified by comparison with the analysis results of Finite Element Method(FEM) and temperature test.