基于矩阵式变换器的异步电机直接转矩控制策略研究

Study on Asynchronous Electromotor Direct-torque Control Strategy Based on Matrix Converters

文章研究了一种基于矩阵式变换器的异步电机控制策略,分析了异步电机的直接转矩控制方法和矩阵式变换器的空间矢量调制,研究了直接转矩控制方案中,矩阵式变换器矢量电压的选择。这一控制策略同时实现了矩阵式变换器的空间矢量调制和异步电机的直接转矩控制。仿真和实验结果表明:采用这一控制策略的调速系统具有良好的静、动态性能,并且保持了单位功率因素。

Researched the direct-torque control strategy of asynchronous electromotor based on matrix converters in this paper. The principle of direct-torque control, the space vector modulation of matrix converter and the selection of MC space vector voltage based on direct-torque control was systematically analyzed. Finally, the results show that the control strategy has a good static and dynamic performance of speed control system, and maintain the unity power factor.