Comparative analysis of conventional switched reluctance machines and mutually coupled switched reluctance machines

This paper presents a comparative analysis of conventional switched reluctance machines (SRMs) and mutually coupled switched reluctance machines (MCSRMs) in terms of inductance profiles, torque profiles, the average torque, and the maximum torque. Four 3-phase, 12/8 SRMs including the conventional SRM, the short-pitched MCSRM, the fractionally-pitched MCSRM, and the fully-pitched MCSRM are evaluated. Compared to the conventional SRM, the MCSRMs can be driven by the three-phase standard voltage source converter and work in bipolar, two-phase excitation mode. In the bipolar, two-phase excitation mode, the fully-pitched MCSRM has the highest maximum and average torque production compared to the short-pitched MCSRM and the fractionally-pitched MCSRM.