SVPWM算法中消除偶次谐波的优化及仿真

摘要

In order to eliminate the even harmonic vector control, the reasons causing even order harmonics are analyzed, and a novel SVPWM algorithm, which can eliminate the even harmonics and reduce the switching losses, is put forward . In the algorithm, the seven-stages-switch order is replaced by the five-stages-switch order to reduce the number of order switch. As a result, the switch loss is reduced, and even order harmonics is eliminated as well. The simulation testing is carried out by using Matlab/Simulink. The experimental results show that the algorithm is valid and feasible.%为了消除矢量控制中的偶次谐波,在分析了偶次谐波产生的原因的基础上,提出了一种能够消除偶次谐波并减少开关损耗的SVPWM算法.该算法将常规的7段式开关顺序变为了5段式开关顺序,减少了开关次数,从而既降低了开关损耗,又消除了偶次谐波.文章最后利用Matlab/Simulink对该算法进行了仿真,验证了该算法的正确性与可行性.