Independent Current Control of Dual Parallel SRM Drive Using a Public Current Sensor
Independent Current Control of Dual Parallel SRM Drive Using a Public Current Sensor
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DOI：
10.1109/tmech.2016.2592981
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发表时间：
2017-02
期刊：
影响因子：
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通讯作者：
C. Gan;Jianhua Wu;Ning Wang;Yihua Hu;W. Cao;Shiyou Yang
中科院分区：
文献类型：
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作者：
C. Gan;Jianhua Wu;Ning Wang;Yihua Hu;W. Cao;Shiyou Yang
开关磁阻电机（SRM）由于其无稀土和宽调速范围的特点，被认为是一种潜在的汽车应用的候选人。传统上，电流传感器被安装在每一相中用于电流调节控制，这将显著增加多电机驱动器的成本和体积。本文提出了一种仅用一个电流传感器的双并联开关磁阻电机独立电流控制技术。为了从公共电流中识别单个电机电流，相应地开发了脉冲注入方案。两个脉冲分别注入到双变换器的下晶体管的激励区和注入脉冲触发的固定电流采样点的电机电流识别。双开关磁阻电机的独立电流控制可以直接通过公共电流检测来实现，尽管电机参数不同。所开发的系统只需要一个电流传感器，而无需额外的硬件或降低系统性能。并联750 W和150 W三相12/8开关磁阻电机驱动器的仿真和实验结果证实了所提出的方法的有效性。通过这种方案，双电机驱动器可以更加紧凑，并且对于牵引驱动应用而言具有成本效益。
Switched reluctance motors (SRMs) have been considered a potential candidate for automotive applications due to its rare-earth-free feature and wide speed range. Conventionally, a current sensor is installed in each phase for the current regulation control, which will considerably add the cost and volume to multimotor drives. This paper proposes an independent current control technique for dual parallel SRM drives using only one current sensor. In order to identify the individual motor currents from the public current, a pulse injection scheme is developed accordingly. Two pulses are individually injected into the lower transistors of the dual converter in the excitation regions and the fixed current sampling points triggered by the injected pulse are presented for motor current identification. The independent current control for the dual SRM can be directly implemented by the public current sensing, although the motor parameters are different. The developed system requires only one current sensor without additional hardware or reduced system performance. The simulation and experimental results on parallel 750 W and 150 W three-phase 12/8 SRM drives are presented to confirm the effectiveness of the proposed method. With this scheme, the dual-motor drive can be more compact and cost effective for traction drive applications.