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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >A Position Sensorless Torque Control Strategy for Switched Reluctance Machines With Fewer Current Sensors
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A Position Sensorless Torque Control Strategy for Switched Reluctance Machines With Fewer Current Sensors

机译：具有较少电流传感器的开关磁阻机的位置无传感器扭矩控制策略

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摘要

To decrease the cost, enhance the torque performance, and improve the system reliability, this article puts forward a novel position sensorless torque control strategy for switched reluctance machines (SRMs) with fewer current sensors. In this article, a developed direct torque control (DTC) strategy is proposed for the torque ripple mitigation, where a hybrid chopping mode is employed and the torque is online compensated according to the torque error. A developed current-sensing scheme with fewer current sensors is presented. The phase current in a whole period can be easily detected for both the torque control and sensorless control. The position sensor is removed from the proposed drive. The real-time rotor position of each phase can be obtained by implementing a flux linkage-current-based method. According to the current and position, the instantaneous phase torque and torque sharing function can be determined for the DTC. Therefore, system reliability can be significantly improved due to the simplified sensor part. With the proposed scheme, a compact, high-reliable, and high-performance SRM drive can be achieved. A three-phase 12/8 SRM prototype is employed for the experiment to verify the feasibility of the proposed system.
机译：为了降低成本，提高扭矩性能，提高系统可靠性，本文提出了一种用于具有较少电流传感器的开关磁阻机（SRMS）的新型位置无传感器扭矩控制策略。在本文中，提出了一种用于扭矩脉动缓解的显影直扭矩控制（DTC）策略，其中采用混合斩波模式并且根据扭矩误差在线补偿扭矩。提出了一种具有较少电流传感器的电流传感方案。对于扭矩控制和无传感器控制，可以容易地检测到整个时段中的相电流。从所提出的驱动器中取出位置传感器。通过实现基于磁通连杆的方法，可以获得每个阶段的实时转子位置。根据电流和位置，可以针对DTC确定瞬时相位扭矩和扭矩共享功能。因此，由于简化的传感器部分，可以显着改善系统可靠性。利用所提出的方案，可以实现紧凑，高可靠性和高性能的SRM驱动器。采用三相12/8 SRM原型进行实验以验证所提出的系统的可行性。

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