摘要
在空间电压矢量图区域划分的基础上,提出一种基于矢量分区概念的三电平SVPWM零序分量分析方法。深入研究了不同工作状态下的零序分量特点,研究结果表明对三电平SVPWM选择适当的冗余电压矢量可以通过对三角载波型PWM叠加适当的零序分量等效实现,同时所提出的零序分量分析方法直观有效,物理意义清晰,便于对零序分量的理解和运用。仿真和实验结果表明文中给出分析方法的正确性。
This paper proposes a novel method for analyzing the zero-sequence signal of three-level voltage-source inverter based on vector diagram partition. The inherent relation between carried-based PWM and SVPWM is demonstrated. It is shown that the two method can work equivalently through proper selection of active time for the redundant vector in the case of space vector modulation, or zero-sequence signal injections in the case of carried-based modulation. Both simulation and experimental results verify the effectiveness of proposed approach.
出处
《电工技术学报》
EI
CSCD
北大核心
2009年第12期102-108,共7页
Transactions of China Electrotechnical Society
基金
上海大学创新基金资助项目
关键词
三电平空间矢量图
零序电压
载波调制
空间矢量调制
Three-level space voltage vector diagram
zero-sequence voltage
carried-based modulation
space vector modulation
