Study of High Speed SRM Using Vector Control for Electric Vehicle

In order to realize downsizing motor in an electric vehicle (EV), the high speed motor is effective. Switched Reluctance Motor (SRM)is suitable for the high speed drive because the rotor has simple and robust structure. However, as a disadvantage, the vibration and the acoustic noise are large. Moreover, the complicated unipolar current excitation results in the difficulty of the torque controller design. To overcome these problems, the vector control has been proposed for SRM. However, the vector control has not been applied to the SRM in the high speed region. In this paper, the drive conditions such as switching frequency, bus voltage to apply the vector control to the SRM in the high speed region are clarified. It is shown by the experiment that the proposed SRM can be driven by the vector control in the high speed region and can realize the high output power and low vibration.