Switched Reluctance Motor Loss Optimization Based on Finite Element Method

摘要

The loss of Switched Reluctance Motor (SRM) may cause the motor overheat. In many fields, the application of SRM needs a deeply research and analysis on heat radiating problem. To optimize SRM losses, a 2D transient model of three-phase 12/8 SRM is established with the finite element method following current chopping control principle. Through the Ansoft software analysis, the motor core flux density waveforms are obtained. The hysteresis losses and eddy-current losses in different parts of the motor are calculated using the ellipse method. Changing the structural parameters of the motor to modify gap length, the new motor model is established to optimize motor losses. After the simulation analysis, the comparison of efficiency and losses for motor model with different parameters can help us get the optimal motor model. The result shows that through the optimization, the total loss of the SRM is reduced by 23%. The research in this paper provides the theoretical basis to further optimization and the study on the performance of the SRM.