Iron loss analysis of switched reluctance motor

For the switched reluctance motor non-sinusoidal magnetic field inside, as well as nonlinear and even the existence of partial saturation, it is difficult to calculate switched reluctance motor iron loss. The time-stepping finite element method was used to solve the non-sinusoidal variable system, and a particular impact factor on iron loss was studied, and a detailed analysis of iron loss calculation of local distribution was carried out. For arbitrary waveform iron loss calculation model, based on the time-stepping finite element method, the iron loss of yoke and the pole of 12/8 pole switched reluctance motor stator and rotor were calculated. According to the distribution of magnetic flux density, different regions were divided, harmonic analysis was conductd to the flux density of dufferent regions, and then the iron core loss for every region was obtained. The results of the two methods were compared and analyzed, and it validated that the time-stepping finite element method was feasible for calculating the iron loss of SR motor, and some useful conclusions for the calculation of switched reluctance motor iron loss were obtained.