基于输入电流空间矢量调制-输出滞环电流控制的MC-PMSM矢量控制系统

Vector Control System of Permanent Magnet Synchronous Motor Based on Space Voltage Vector Modulation–Hysteresis Current Control

针对输入电流空间矢量调制-输出滞环电流控制(SVM-HCC)方法存在的缺点,如虚拟整流环节在零矢量导通期间,虚拟逆变环节的输出电流滞环控制失效,提出了将虚拟整流环节中的零矢量用两个互补的非零矢量来合成的思想。该方法将空间矢量的60°相区分为两个30°相区,使用不同的两个互补的非零矢量,使虚拟直流环节具有有效直流电压,从而有效控制电动机电流。对MC-PMSM矢量控制系统的SVM-HCC方法原理进行了详细的推导、分析和试验研究。原理样机试验结果表明,将虚拟整流环节中的零矢量用两个互补的非零矢量来合成后,采用SVM-HCC的矩阵变换器-永磁同步电动机系统不仅具有良好的控制效果和较好的网侧性能,而且输入电流和输出电流波形的正弦性较好。

The disadvantage of the input current space vector modulation-hysteresis current control （SVM-HCC） is analyzed, which isthis method can＇t be applied efficiently during the zero vector duty. An improved method, in which zero vector is divided into two parts, is presented in this paper. In this approach, the 60°-segment of the input current space vector are divided into two 30°-segments and two nonzero vectors which have opposite values are used to instead of the zero vector, to make the direct voltage in virtual direct part efficiency. The simulation and experiment results show that the MC-PMSM system of MC based on the SVM-HCC not only can attain good control performance and high input power factor, but also good waveforms of the input current and output current.