| 一种优化的模块化多电平换流器电压均衡控制方法 |
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| 引用本文： | 屠卿瑞,徐政,郑翔,张静.一种优化的模块化多电平换流器电压均衡控制方法[J].电工技术学报,2011(5):15-20. |
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| 作者姓名： | 屠卿瑞 徐政 郑翔 张静 |
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| 作者单位： | 浙江大学电气工程学院;浙江电力调度通信中心; |
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| 摘 要： | 模块化多电平换流器(MMC)的各个子模块间的电压均衡问题,是MMC拓扑的难点之一.本文在采用最近电平调制方式的基础上,对按子模块电容电压排序后,根据桥臂电流方向直接选择相应子模块触发的传统电压均衡方法进行了改进,引入子模块间最大电压偏差量,有效避免了因排序算法导致的同一IGBT不必要的反复投切现象,从而在保证各子模块电...
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| 关 键 词： | 模块化多电平换流器 子模块 电压均衡 开关频率 开关损耗 |
An Optimized Voltage Balancing Method for Modular Multilevel Converter |
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| Tu Qingrui Xu Zheng Zheng Xiang Zhang Jing.An Optimized Voltage Balancing Method for Modular Multilevel Converter[J].Transactions of China Electrotechnical Society,2011(5):15-20. |
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| Authors: | Tu Qingrui Xu Zheng Zheng Xiang Zhang Jing |
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| Affiliation: | Tu Qingrui1 Xu Zheng1 Zheng Xiang1 Zhang Jing2(1.Zhejiang University Hangzhou 310027 China 2.Zhejiang Electric Power Dispatch and Communication Center Hangzhou 310007 China) |
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| Abstract: | Modular multilevel converter based HVDC(MMC-HVDC) is a new generation VSC-HVDC topology invented by Siemens.The problem of voltage balancing among the submodules(SM) is difficult to solve.The traditional method,which uses the sorting results of the SM capacitor voltages and fires the IGBTs directly,leads to relatively higher power losses.This paper proposes an improved voltage balancing control method,which reduces the switching operation significantly and the switching losses of the converter decreases con... |
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| Keywords: | Modular multilevel converter sub modules voltage balancing switching frequency switching losses |
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