基于矩阵式变换器的异步电动机矢量控制

为提高交流调速系统的运行性能并满足节能的要求,提出了一种适用于矩阵式变换器驱动异步电动机调速系统的组合控制策略,实现了矩阵式变换器的空间矢量调制和异步电动机的直接磁场定向矢量控制。将矩阵式变换器的优点和矢量控制的优点结合起来,实现了异步电动机的高性能控制。仿真结果表明:使用该控制策略的调速系统在加减速运行和负载转矩变化等场合均具有良好的动态性能;四象限运行结果证明了该系统可将能量回馈至电网,实现了节能的目的。稳态运行实验结果验证了上述控制方法的可行性和有效性。

Vector control of induction motors fed by matrix converters

The performance of AC drive system can be improved with energy savings through a combined control strategy for matrix converter fed induction motor drive systems. The strategy uses both space vector modulation of the matrix converter and direct field oriented control of the induction motor. This combined control strategy combines the advantages of matrix converters and vector control techniques to provide excellent control of induction motors. Simulation results showed that the drive system works well in dynamic conditions, in terms of acceleration, deceleration and load torque changes. Four quadrant operation results demonstrate the regeneration capability of the drive system. Steady-state experimental results validate the effectiveness and feasibility of the control strategy.