改善SVPWM低速性能方法的研究

Research on Amending Low Velocity Equality of SVPWM

针对空间矢量脉宽调制法( SVPW M )在低频范围内电流畸变和转矩脉动较大的情况,提出了分割计算所得零矢量的总的作用时间,同时加大磁链圆等分份数的方法。仿真和实验结果表明,与传统的合成矢量法相比,该改进方法的算法简便,易于数字化实现和用于实时控制,具有一定的应用价值。

Aiming at the current aberration and torque fluctuation of the Space Vector Pulse Width Modulation(SVPWM) at low frequencies, this paper proposes to divide the total time at which the zero vector played to several small parts and to increase the number of the flux circle dividing simultaneously.Simulation results indicate that the merits of the improved method are easy to get,so it is valuable for practical application.