永磁同步电动机牵引逆变装置的关键技术研究

Research on key technology of traction inverter for permanent magnet synchronous motor

论述了空间矢量脉宽调制(SVPWM)的基本原理,详细地介绍了在MATLAB软件环境下实现电压空间矢量的方法,并进行了仿真。利用永磁同步电机(PMSM)调速系统试验平台进行了实验测试,仿真和实验结果表明,采用SVPWM调制技术比传统正弦波PWM(SPWM)调制技术具有更好的动态响应,对电机参数不敏感,非常适合用于牵引驱动及工业提升系统的DC/AC逆变装置中。

After expounding the basic principle of the space vector pulse width modulation （SVPWM）, the paper in detail described the methods to achieve voltage space vector in MATLAB, and conducted simulation. The test platform of permanent magnet synchronous motor （PMSM） speed control system was applied to conduct lab test. The simulation and test results showed SVPMW modulation technique had better dynamic response than traditional sine wave PWM （SPWM） modulation technique. The technique was not sensitive to motor parameters, very suitable for DC/AC inverter in traction drive and industrial upgrading system.