High Speed SRM Using Vector Control for Electric Vehicle

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