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Method of Excitation for an Ultra High-Speed 2-phase SRM Using Hall-Effect Sensor
Alvaro Amos Hadipranoto(아모스),Grace Firsta Lukman(그레이스),Jin-Woo Ahn(안진우) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.11
The performance of switched reluctance motors (SRM)s depends heavily on the excitation angle. Ultra high-speed application makes it impossible to implement general contact-type sensors to detect the rotor position. In this paper, a simple magnetic sensor that operates based on Hall-effect principle is used to detect the position of the rotor, such as found in brushless DC (BLDC) motors. The proposed excitation method uses the edges of the three signals from the sensor to turn on and off the phases. Moreover, current level comparison is also used to help excite the phase. This approach much reduces the computation burden, and can even be implemented by analog means which may reduce overall cost. Simulations were performed to verify the effectiveness of the proposed method.