双Y移30度六相PMSM的空间矢量控制

Space Vector Control for Dual Y Shift 30 Degree Six-Phase Permanent-magnet Synchronous Motor

针对普通的正弦波脉宽调制(SPWM)技术在双Y移30度六相永磁同步电动机(PMSM)中谐波过大的问题,为了有效分析电机的谐波电流,建立了双Y移30度六相永磁同步电动机的数学模型,利用电压矢量空间解耦的方法,通过标准基向谐波基的转化,将六维空间的永磁同步电动机模型解耦至3个相互垂直的平面上,在此基础上提出了两种新颖的空间矢量脉宽调制(SVPWM)技术,详述了两种技术中电压矢量的选择方法和时间计算方法。构造了基于定点数字信号处理器TMS320F2812的7.5KW双Y移30度六相永磁同步电动机控制系统。通过实验验证了提出方法的正确性和可行性。

To the problem of excessive harmonic in the dual Y shift 30 degree six phase permanent-magnet synchronous motor （PMSM） with ordinary sinusoidal pulsewidth modulation （SPWM） technology. The mathematical model of PMSM is established to effectively analyze the motor harmonic currents. Making use of voltage vector space, the six-dimensional PMSM model is decoupled in three planes plumb each other via conversion of canonical base to harmonic wave base. Two space vector polsewidth modulation （SVPWM） techniques are proposed, and the selection and calculating methods of voltage vector in both techniques are illustrated in details respectively. A 7. 5KW dual Y shift 30 degree PMSM control system is set up based on a fixed-point TMS320F2812 digital signal processor. Experimental results show the effectiveness and feasibility of the proposed method.