| 模块化多电平换流器环流抑制控制器设计 |
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| 引用本文： | 屠卿瑞,徐政,管敏渊,郑翔,张静. 模块化多电平换流器环流抑制控制器设计[J]. 电力系统自动化, 2010, 34(18): 57-61 |
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| 作者姓名： | 屠卿瑞 徐政 管敏渊 郑翔 张静 |
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| 作者单位： | 1. 浙江大学电气工程学院,浙江省杭州市,310027
2. 浙江电力调度通信中心,浙江省杭州市,310007 |
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| 摘 要： | 为抑制模块化多电平换流器(modular multilevel converter,MMC)内部的三相环流,在MMC内部数学模型的基础上,采用二倍频负序旋转坐标变换将换流器内部的三相环流分解为2个直流分量,并设计了相应的环流抑制控制器(circulating current suppressing controller,CCSC),从而消除了桥臂电流中的环流分量,大大减小了桥臂电流的畸变程度,使其更逼近正弦波.最后通过PSCAD/EMTDC搭建了包含该附加控制器的MMC仿真模型,结果证明所提出的控制方法可以在不用增大桥臂电抗值的情况下,有效地抑制换流器的内部环流,同时不会对MMC外部输出的交流电压和电流产生负面影响.
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| 关 键 词： | 模块化多电平换流器 环流抑制控制器 二倍频负序旋转坐标变换 |
| 收稿时间： | 2010-04-29 |
| 修稿时间： | 2010-09-04 |
Design of Circulating Current Suppressing Controllers for Modular Multilevel Converter |
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| TU Qingrui,XU Zheng,GUAN Minyuan,ZHENG Xiang,ZHANG Jing. Design of Circulating Current Suppressing Controllers for Modular Multilevel Converter[J]. Automation of Electric Power Systems, 2010, 34(18): 57-61 |
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| Authors: | TU Qingrui XU Zheng GUAN Minyuan ZHENG Xiang ZHANG Jing |
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| Affiliation: | TU Qingrui1,XU Zheng1,GUAN Minyuan1,ZHENG Xiang1,ZHANG Jing2(1.Zhejiang University,Hangzhou 310027,China,2.Zhejiang Electric Power Dispatch , Communication Center,Hangzhou 310007,China) |
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| Abstract: | A circulating current suppressing controller(CCSC)is designed to eliminate the inner balancing currents in modular multilevel converter(MMC).The CCSC uses the inner mathematical model of MMC through a double fundamental frequency negative sequence rotational frame to decompose the three-phase alternative circulating currents to two DC components.The designed CCSC can minimize the distortion degree of the arm current significantly such that the arm current can closely approximate the fundamental sine wave.Si... |
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| Keywords: | modular multilevel converter(MMC) circulating current suppressing controller(CCSC) double fundamental frequency negative sequence rotational frame |
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