Design of switched reluctance machine for starter/generator of hybrid electric vehicle

Simple and robust structure, high power density, high efficiency and fault tolerability of switched reluctance machine (SRM) are good reasons for its selection as starter/generator of hybrid electric vehicles (HEV). Different requirements in generating and motoring modes require special design of SRM. The design is based on pre-defined equations with the objective functions as high torque over low speed and high efficiency over high speed. Experimental results of a typical SRM confirmed the finite element (FE) results, and static analytical model is confirmed by FE computations on the designed motor. Simulation results show that the SRM is capable for starting the vehicle and charging the battery.