Design and optimisation of slotted stator tooth switched reluctance motor for torque enhancement for electric vehicle applications

The switch reluctance motor (SRM) drive receives growing attention from different researchers and from the vehicle industry. The SRMs are widely used in the electric vehicle applications due to its tailor-made characteristics. This paper introduces a novel topology of the slotted stator tooth switched reluctance motor (SST-SRM). In the proposed topology, the stator of the conventional SRM is modified with slotted stator tooth, aiming for better performance of the machine. The stator tooth is slotted with different depths from the inner periphery and the parameters of the SRM are optimised for acquiring the maximum torque output. Finite element analysis (FEA) has been carried out for the modified topology. The parameters are calculated analytically and results are compared with FEA results.