摘要
针对中矢量对三电平PWM整流电源中点平衡的影响,提出了一种大矢量合成中矢量的新对称五段式矢量调制算法。该调制算法的波形对称,谐波小,易于实现。实验结果表明,系统性能稳定,功率因数高,且在小输出滤波电容情况下,解决了PWM整流器的中点电位不平衡问题。
For three-phase three-level NPC PWM rectifier,a symmetrical five-segment space vector modulation is proposed in which the radial vector has been synthesized by big vector.It is symmetrical, and has fewer harmonic, and easy to be designed.The experimental result shows that under small capacitor, the PWM rectifier has high factor, stability and best neutral point balance effect.
出处
《电力电子技术》
CSCD
北大核心
2007年第12期82-84,共3页
Power Electronics
关键词
整流器
脉宽调制
矢量
rectifier
pulse width modulation
vector
