Abstract：The traditional direct instantaneous torque control (DITC) adopts a single control strategy without considering the output torque change of each phase winding with the rotor position, resulting in large torque ripple during commutation. Therefore, a new DITC method is proposed to suppress the torque ripple of switched reluctance motor (SRM). The conduction period is divided into regions according to the inductance change rule of the motor winding, and proper hysteresis strategies are designed for each region based on the output torque capacity changes in each conduction region. Hence, the internal hysteresis loop of the motor phase with large output torque capacity is used to adjust the torque error in the whole conduction cycle, and the torque ripple of SRM is further reduced. Moreover, the efficiency of the motor is improved by adjusting the turn-off angle online and optimizing the turn-on angle off-line. Simulation and experimental results verify that the proposed method effectively reduces the torque ripple of the SRM and improves the motor efficiency.
蔡燕, 居春雷, 王浩楠, 万耀华, 张海华. 开关磁阻电机的新型直接瞬时转矩控制方法及其高效率运行[J]. 电工技术学报, 2022, 37(18): 4625-4637.
Cai Yan, Ju Chunlei, Wang Haonan, Wan Yaohua, Zhang Haihua. A New Direct Instantaneous Torque Control Method of Switched Reluctance Motor and Its High Efficiency Operation. Transactions of China Electrotechnical Society, 2022, 37(18): 4625-4637.
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