基于零序信号注入的载波型多相PWM控制技术  

Multi-Phase Carrier PWM Control Technology Based on Zero-Sequence Signal Injection

作　　者：于飞[1] 张晓锋[1] 乔鸣忠[1] 

机构地区：[1]海军工程大学电气与信息工程学院,武汉430033

出　　处：《电工技术学报》2009年第2期127-131,共5页Transactions of China Electrotechnical Society

摘　　要：针对直接计算式多相空间矢量PWM(SVPWM)算法复杂、难于拓展的问题,提出了一种基于零序信号注入的载波型多相逆变器PWM控制方法,该方法通过在正弦参考波中叠加一定的零序分量来改善PWM波的特性,实现了与高性能SVPWM同样的控制性能。分析了该方法的基本原理,推导了零序分量的变化范围,并给出了几种具有不同输出特性的零序信号实现方法。理论分析和实验结果表明,这种基于载波调制的多相PWM控制方法具有实现简单、综合性能好、易于拓展的特点。To solve the problems of complex arithmetic and difficult expandability in the direct-computed multi-phase space vector pulse width modulation （SVPWM） control, a novel multi-phase carrier based PWM control method based on zero-sequence injection is proposed. The proposed method can improve the output voltage characteristic through injecting some zero-sequence signal to the standard sine signal, and high performance can be realized as the SVPWM. The theory of the new method is introduced, and range of the zero-sequence signal is deduced. Several classic zero-sequence signal realization methods were given, and the feature is discussed. Theoretical analysis and experiment results show that the multi-phase carrier PWM method based on zero-sequence injection has the advantages of simple realization, good performance and easy extending.

关 键 词：多相逆变器 载波型PWM 零序信号 谐波 

分 类 号：TM464[电气工程—电器]