Higher Performance Speed Control System with Flat Torque Control for Switched Reluctance Machines

开关磁阻电机（srm）最吸引人的优点之一是它没有永磁体。然而，srm有一些缺点，特别是大的转矩波动和非线性特性。转矩脉动产生的噪声、不规则旋转和非线性特性使得srm的精确控制成为可能。这些缺点阻碍了srm的广泛使用。本研究试图解决这些缺点，以便将srm应用于许多领域。仅采用转矩脉动抑制控制是不足以减小转矩脉动的。实现小转矩脉动既需要瞬时电流波形控制，又需要合适的平转矩控制驱动电路。在研究中，提出了一种新型并联电容驱动电路，并通过控制和电路实现了较低的转矩脉动。驱动电路的平转矩控制实现了转矩脉动小于5%。实验证明，采用该电路和平面转矩控制器的速度控制比传统的SRM驱动控制具有更高的性能。

One of the most attractive merits of switched reluctance machines (SRMs) is they have no permanent magnet. The SRMs, however, have some demerits, large torque ripples, and nonlinear characteristics, especially. The torque ripples results acoustic noises, irregular rotation, and nonlinear characteristics makes the precise control of SRMs. The demerits prevent for widespread use of SRMs.The study tried to solve the demerits in order to apply SRMs to many fields. It is not enough to reduce the torque ripple with only the torque ripple suppression control. The realization of lower torque ripple of SRMs needs both instantaneous current waveform control and suitable drive circuit for flat torque control. In the study, a novel drive circuit with parallel capacitors was proposed and the lower torque ripple was realized with both the control and the circuit. The flat torque control on the drive circuit realized torque ripple less than 5%. It is confirmed in experiment that the speed control with both the proposed circuit and the flat torque controller has much higher performance than conventional SRM drive control.