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基于CPS-SVPWM调制的MMC-STATCOM简化算法研究

TAN Fenglei,HANG Feng,LI Yifeng

Journal of North China Electric Power University（2017）

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Abstract
针对模块化多电平换流器(MMC)难以实现多电平SVPWM技术,提出了基于CPS-SVPWM调制的MMC控制算法.该算法是将MMC等效看作上、下2N个三相半桥的串联,合理布置两电平SVPWM生成模块的位置后,结合载波移相技术,实现多电平输出.最后,在电力系统仿真分析软件PSCAD/ EMDTC中搭建了基于模块化多电平换流器的五电平STATCOM仿真模型,结果表明基于CPS-SVPWM调制的MMC简化算法简单,控制效果好,电压利用率高,可以很好地应用到多电平MMC的控制领域,从而也验证了文中所提出的控制方法的有效性和可行性.
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Key words
SVPWM,modular multilevel converters,STATCOM,two-level,carrier phase shifting
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