摘要
全面分析了三电平逆变器中应用的空间矢量调制法与载波调制法这两类调制方法的内在联系,包括调制信号与空间矢量、零序电压与冗余矢量的分配因子。详细推导了各个扇区零序电压的表达式,阐述了空间矢量调制就是中心化的三角-正弦调制。基于以上联系可以实现两类调制算法的相互转化。仿真结果验证了该内在联系的正确性。
Analyses the correlation between PWM and SVPWM. The relation involves modulation signal and space vector, zero sequence voltage and redundancy vector and so on. The expression of zero sequence signal of every sector is deduced in detail. Essentially it is demonstrated that space vector sector modulation is centralizing SPWM. Based on the correlation, the two modulation methods can be transformed easily. Finally, the effectiveness of proposed correlation between the PWM and SVPWM is confirmed by the simulative results.
出处
《电气传动自动化》
2007年第3期7-10,20,共5页
Electric Drive Automation
关键词
空间矢量扇区
零序电压
载波调制
空间矢量调制
space vector sector
zero sequence voltage
wave-carried modulation method
space-vector PWM
