International Journals Yoon-Gi Oh, Byeol Han, and Kyo-Beum Lee, "Direct Self-Control of Interior Permanent Magnet Synchronous Motors with a Constant Switching Frequency," Journal of Electrical Engineering & Technology, vol. 17, pp. 1121-1130, Mar. 2022. -SCIE
2022
본문
This paper proposes a direct self-control (DSC) method for interior permanent magnet synchronous motors (IPMSMs) with a constant switching
frequency. The disadvantage of the conventional DSC method, which has the characteristics of low switching frequency and fast torque response in
high-power systems such as railway vehicles, is that the switching frequency varies according to the operating conditions. In this study, a torque
controller with a constant switching frequency is applied to overcome this problem, instead of the torque hysteresis controller for the conventional
DSC method. The proposed DSC method uses a torque regulator with a proportional-integral (PI) controller and a triangular carrier to realize a
constant switching frequency. In the transient state of the torque, the dynamic torque response is slow because both zero and active voltage vectors
are selected. Therefore, only the active voltage vectors are applied during the transient state of the torque to improve the dynamic torque response.
The effectiveness of the proposed DSC method is verified through simulation and experimental results.
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