直接转矩控制的感应电机转矩和磁链加权最优控制

Flux and Torque Ripple Minimization of Inductance Motor Based on Direct Torque Control

本文针对直接转矩控制系统存在较大的转矩脉动问题,提出一种新的控制方法。该方法在传统直接转矩控制的基础上,引入一个磁链脉动和转矩脉动加权最优评价指标函数,使感应电机的磁链脉动和转矩脉动最小,从而提高系统的性能。仿真表明:该方案能有效地解决磁链和转矩的脉动问题。

Direct torque control（DTC） schemes can produce quick and robust responses, but their major problem is the high torque and flux ripple, especially when operation conditions result in low speed. This paper proposes a new control strategy. On the basis of conventional direct torque control, a flux and torque ripple minimum controller is introduced in the strategy in order to decrease flux and torque ripple. Simulation results justify the validity of the proposed method to reduce the motor torque and flux ripple.