【摘要】 结合永磁同步电机磁场定向控制的特点,将矩阵变换器用于永磁同步电机的调速系统,实现永磁电机的交交直接控制并且达到近似单位功率因数。首先阐述矩阵变换器双空间矢量调制的原理,输入侧采用电流空间矢量,输出侧采用电压空间矢量构建了矩阵变换器-永磁同步电机矢量控制系统;然后为了降低转矩脉动,加入电流补偿环节,文中给出了补偿环节的设计方法。原理样机试验结果表明,采用双空间矢量调制的矩阵变换器-永磁同步电机系统不仅达到了良好的控制效果与较好的网侧性能,而且电流补偿环节也是确实有效的。更多还原

【Abstract】 The matrix converter (MC) is applied to control permanent magnet synchronous motor (PMSM) based on the flux-oriented control of PMSM. Consequently, the AC to AC direct control of PMSM is realized and unity power factor also is obtained. Firstly, this paper introduces the double space vector modulation (DSVM) of MC that contains the input current space vector modulation (SVM) and the output voltage SVM. The PMSM vector control system based on MC is constructed. Then, the current compensator is designed in this paper for reducing the torque pulsation of PMSM. Finally, the prototype is completed. The simulation and experiment results show that the PMSM system of MC based on DSVM not only can attain good control performance and high input power factor, but also the compensation method of output current is valid.更多还原