The Basic Research Of The Hybrid Excitation Switched Reluctance Motor

The switched reluctance motor(SRM) has series of advantages, such as thesimple and firmly structure, large starting torque, good performance under lowspeed, and so on. So people start to focus on the SRM system among all kinds ofdrive systems. The hybrid excitation switched reluctance motor (HESRM) project,which this paper introduces, combines the rare-earth permanent magnet materialswith the conventional SRM which is excited totallybyelectricity.Firstly, the paper reviews the present status of the switched reluctance motor(SRM). And elaborate the HESRM's working principle, analyze theelectromagnet torque of the HESRM. And then analyze the effect of thepermanent magnet on the electromagnet torque of the motor by equivalentmagnetic circuit graphic method.Secondly, build up the inductance data base, on which the current'smathematical model is based. And simulate the HESRM's current under the ratedspeed through the model.Thirdly, analyze the effect that the motor's parameter, such as the motor'spolar arc, the size of the permanent magnet, and so on, does on the motor'sbehavior. Lay the foundation for the design and optimization of this series motor.Do the experiment on the model motor. The result of the experiment well agreesthe data of the simulation.At last, compare the performance of the HESRM and the conventional SRM.Through the comparison, get the conclusion that the HESRM has higher powerdensity, larger out torque, est. than the conventional SRM. So it does have a greatexpectation in various industrial applications.