直接转矩控制转矩脉动最小化方法研究

Research on Torque Ripple Minimum Approach of Direct Torque Control System

针对基于直接转矩控制中的感应电动机在低速运转时存在较大的转矩脉动问题,提出了一种新的控制方法。该方法在对传统直接转矩控制的开关控制表进行改进的基础上,建立了新型双层滞环控制的开关控制表,使感应电动机的转矩脉动达到最小。实验结果表明该方法能有效地解决转矩脉动问题。

For the large torque ripple of inductance motor based on direct torque control, especially at a low speed, this paper proposes a new control strategy. On the basis of improving conventional switch table of direct torque control system, a two-hysterics control switch table is established in the strategy in order to decrease torque ripple. The simulation shows that it can get good torque performance.