Finite Element Analyses (FEA) Of Magnetic Field Of The Switched Reluctance Motor (SRM) And Calculation Of Iron Losses Of Motor Cores

With summarizing and describing systematically the fundamental principles and research developments of electromagnetic field in the motor, finite element analyses (FEA) of electromagnetic field of engineering, the switched reluctance motor (SRM) ,and iron losses of motor cores, taking the common four-phase , 8/6-pole SRM as the object of study, this paper analyses, calculates, and then simulates the electromagnetic field in the SRM using 2D finite element method, and obtains the -i- characteristics as the magnetization curve of the SRM with the data derived from the results of FEA.In the part of analyses of iron losses of motor cores, the paper presents the finite element algorithm for calculating the eddy current losses in laminated steel cores of the motor, and compares it to the analytical method widely applied at present. Further, by calculating iron losses of a SRM sample, it reveals the limitations of the analytical method in calculating the eddy current losses, and shows the reliability and correctness of the presented finite element algorithm. By analyzing and studying iron losses of the SRM, the paper provides another basis for the control strategy and structure optimization of the SRM.