非正交坐标系下双三相感应电机SVPWM控制策略

发布时间：2018-03-25 08:20

本文选题：双三相感应电机　切入点：空间矢量脉宽调制　出处：《电机与控制学报》2014年12期

【摘要】：针对传统双三相电机空间矢量脉冲宽度调制(space vector pulse width modulation,SVPWM)算法中含有大量的三角函数和求根运算,且电机定子电流谐波含量大的问题。结合双三相电机的矢量分类技术,在120°的非正交坐标系下提出了一种双三相感应电机的空间矢量脉冲宽度调制算法。判断三相给定电压信号的最大值和最小值,通过总结规律,可直接求得各相开关的切换时刻,无须进行扇区和基本电压矢量作用时间的计算。对仿真和实验结果的分析表明,与传统双三相SVPWM算法相比,所提出的双三相感应电机SVPWM算法可以有效抑制电机定子电流谐波的同时,大大缩短算法执行时间。定子电流谐波的抑制可提高电机控制性能,算法执行时间的缩短将为处理器节约资源。
[Abstract]:In view of the problem that the traditional space vector pulse width modulation space vector pulse width modulationsSVPWM algorithm contains a large number of trigonometric functions and root-seeking operations, and the stator current harmonic content of the motor is large, this paper combines the vector classification technology of the two-phase motor. A space vector pulse width modulation algorithm for a two-phase induction motor is proposed in a non-orthogonal coordinate system of 120 掳. The maximum and minimum values of the three-phase given voltage signal can be judged, and the switching time of each phase switch can be obtained directly by summing up the rules. There is no need to calculate the action time of sectors and basic voltage vectors. The analysis of simulation and experimental results shows that, compared with the traditional dual-three-phase SVPWM algorithm, The proposed two-phase induction motor SVPWM algorithm can effectively suppress the stator current harmonics of the motor and greatly shorten the execution time of the algorithm. The control performance of the motor can be improved by the suppression of the stator current harmonic. Shortening the execution time of the algorithm will save resources for the processor.
【作者单位】：上海交通大学电力传输与功率变换控制教育部重点实验室;
【分类号】：TM346

【参考文献】