Motor temperature field data processing method based on multi-field coupling

The invention relates to a motor temperature field data processing method based on multi-field coupling. The motor temperature field data processing method includes 1) establishing a two-dimensional electromagnetic field model and a three-dimensional fluid field model; 2) calculating electromagnetic field distribution of a motor for the two-dimensional electromagnetic field model, computing stator coil copper loss, rotor bar copper loss and stator and rotor core loss; 3) for the three-dimensional fluid field model, selecting a computing area to simplify the three-dimensional fluid field model and obtain the fluid field distribution of the motor; 4) computing heat radiation coefficient of the surface of the motor; 5) loading various loss values during motor operating into the three-dimensional fluid field model as a heat source to obtain various boundary conditions according to the heat radiation coefficient, and adopting the finite volume method to obtain the temperature field distribution of the motor. Compared with the prior art, the motor temperature field data processing method has the advantages that influence of the electromagnetic field on the temperature field is considered, the fluid field and the temperature field are coupled, and consideration is more complete, so that computing of the motor temperature field is higher in accuracy and analysis efficiency.