Switched reluctance machine model considering asymmetries and enabling dynamic fault simulation

A holistic approach to machine modeling is essential for realistic drive simulations. Typically, a simulation of the electrical machine behavior and its control is either time consuming or inaccurate. This paper presents a magnetic switched reluctance machine (SRM) model considering material saturation, mutual coupling, asymmetries in excitation and possible asymmetries in geometry. The machine model enables a dynamic motor simulation in combination with control and inverter. This is necessary when considering operation of special fault tolerant SRMs. Furthermore, the unbalanced stator- and rotor tooth forces due to asymmetric excitation during fault operation are calculated. The model can be used with distributed inverters and their respective control structures to effectively design suitable fault tolerant control strategies.