摘要
针对常规空间矢量调制法不能抑制非对称、畸变等非正常输入电压对矩阵变换器输出所产生的影响,对矩阵变换器空间矢量调制策略进行改进,提出了一种非正常输入电压表示方法以及抗扰分量的概念,通过在整流调制矢量中引入抗扰分量来提高矩阵变换器的输出波形质量.该方法不仅能够对各种非正常输入电压引起的输出谐波进行有效抑制,而且简单,易实现.仿真结果验证了所提出方法的正确性.
The conventional space vector modulation can not reduce the influence imposed on the output of matrix converter by abnormal input voltages. To overcome this shortcoming, a new method is proposed to describe the abnormal input voltages. A concept of anti-disturbance vector is introduced and added to the rectifier modulation vector to improve the output waveiorms. The proposed strategy is easy to implement and can effectively reduce the output harmonic components under all types of abnormal input voltages. The numerical simulation shows the validity of the modified strategy.
出处
《控制与决策》
EI
CSCD
北大核心
2006年第8期908-912,917,共6页
Control and Decision
关键词
矩阵变换器
整流调制矢量
参考输入基波电压
抗扰分量
Matrix converter
Rectifier modulation vector
Reference input fundamental voltage
Anti-disturbance vector