Torque Analysis for In-wheel Switched Reluctance Motors with Varied Number of Rotor Poles

Due to the simple and robust structure, costeffective SRM has attracted much attentions. For the applications to Electric vehicles (EVs), in-wheel motor whose configuration has an inner stator and outer rotor. The arrangement can eliminate transmission loss greatly. This paper mainly focuses on the torque characteristics analysis for the in-wheel SRM. Through torque performance comparison among three-phase SRMs with different numbers of rotor poles, including 6/4, 6/8 and 6/10 SRM, the measurement index: torque density, torque ripple and torque per loss can be evaluated by Finite Element Analysis (FEA). Furthermore, the higher number of rotor poles concept is extended to four-phase SRM, 8/6 and 8/10 SRM. The torque characteristics are also assessed between them.