基于CPWM控制方式的正弦波逆变器电路设计  

Design of sine-wave inverter based on CPWM control mode

作　　者：王红玲[1] 张元敏[1] 方波[1] 

机构地区：[1]许昌学院电气信息工程学院,河南许昌461000

出　　处：《电力系统保护与控制》2009年第2期76-79,共4页Power System Protection and Control

基　　金：河南省科技攻关计划项目(072102240033)

摘　　要：对单极性三阶SPWM波进行了谐波分析,指出了UPWM和HPWM存在的缺点,给出了CPWM逆变控制方式的原理,并基于CPWM方式对单极性正弦波逆变控制电路进行了具体设计,最后研制了一台独立光伏系统用单相正弦波逆变器。实验结果表明,基于CPWM控制方式的正弦波逆变器性能优良,具有实用价值。Harmonic of SPWM-wave in unipolar mode is analyzed and the defects of UPWM and HPWM are pointed out. The principle of CPWM control mode is given, based on which the control circuit of the unipolar sine-wave inverter is designed. In the end, a single-phase sine-wave inverter for stand-alone PV system is developed. Experimental results shows that the inverter based on CPWM has fine performances and can be used in practice.

关 键 词：CPWM控制方式 正弦波逆变器 调制失效 死区振荡 

分 类 号：TM464[电气工程—电器]