一种改进的直接转矩控制在舰炮拖动系统中的应用研究

Research on the Improved Direct Torque Control in Induction Motor

传统直接转矩控制中，低速时磁链竹计模型偏差严重，转矩脉动较大。文中提山了对定子电压降反馈补偿的磁链修正模型以及离散空间矢量调制等改进方法。仿真结果说明，低速时磁链计算结果得到了较大改善，同时转矩脉动得到了较好的控制。

Traditional direct torque control has some problems. For example, the estimated value of flux linkage is not precise and the high torque ripple exists especially when motor is at low speed. In this paper, a modified model for flux linkage calculation and divided space vector modulation for voltage vector selection was proposed. The simulation results show that the estimated value of flux linkage is more accurate and the torque ripple is reduced.