| 基于模块化多电平换流器电容均压控制的环流抑制策略 |
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| 引用本文： | 周建萍,葛祥一,茅大钧,张健,叶剑桥,方乐.基于模块化多电平换流器电容均压控制的环流抑制策略[J].科学技术与工程,2021,21(8):3135-3140. |
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| 作者姓名： | 周建萍 葛祥一 茅大钧 张健 叶剑桥 方乐 |
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| 作者单位： | 上海电力大学自动化工程学院,上海200090 |
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| 基金项目： | 国家自然科学基金资助项目（61275038）；上海市 |
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| 摘 要： | 针对模块化多电平换流器(modular multilevel converter,MMC)子模块电压波动导致相间环流过大的问题,在设计MMC子模块均压的基础上,提出一种将低通滤波器与并联的多个准比例谐振(quasi proportional resonant,QPR)控制器结合的新型环流抑制器.首先介绍MMC基本拓扑结构及分析MMC桥臂子模块电压波动与桥臂环流的机理关系,然后提出基于MMC电容均压控制的环流抑制策略,最后在Matlab/Simulink中验证该方案的有效性与可行性.仿真结果表明,MMC子模块电容电压波动幅度较小,并且MMC中高频与低频环流均在合理范围之内.
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| 关 键 词： | 模块化多电平换流器(MMC) 电容均压 并联准比例谐振控制器 高频与频次环流抑制 |
| 收稿时间： | 2020/5/31 0:00:00 |
| 修稿时间： | 2020/12/2 0:00:00 |
Circulation control strategy based on MMC capacitor voltage sharing control |
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| Zhou Jianping,Ge Xiangyi,Mao Dajun,Zhang Jian,Ye Jianqiao,Fang le.Circulation control strategy based on MMC capacitor voltage sharing control[J].Science Technology and Engineering,2021,21(8):3135-3140. |
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| Authors: | Zhou Jianping Ge Xiangyi Mao Dajun Zhang Jian Ye Jianqiao Fang le |
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| Affiliation: | Shanghai University of Electric Power,College of Automation Engineering,Shanghai University of Electric Power,College of Automation Engineering,Shanghai University of Electric Power,College of Automation Engineering,Shanghai University of Electric Power,College of Automation Engineering,Shanghai University of Electric Power,College of Automation Engineering,Shanghai University of Electric Power,College of Automation Engineering |
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| Abstract: | Abstract:In order to solve excessive inter phase circulating current that caused by modular multilevel converter (MMC) submodule voltage fluctuation, this paper proposes a new type of circulating current suppressor that combines a low-pass filter with multiple quasi-proportional resonant controllers (ZPR) connected in parallel on the basis of designing the voltage equalization of MMC submodules. This paper first introduces the basic topology of MMC and analyzes the relationship between the voltage fluctuation of MMC bridge arm sub module and the circulation of the bridge arm, then proposes the circulation control strategy based on MMC capacitor voltage sharing control, and finally verifies the effectiveness and feasibility of the scheme in Matlab/Simulink. The simulation results show that the fluctuation range of MMC sub module capacitance voltage is small and the circulation of MMC medium and low frequency is small All are within a reasonable range. |
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| Keywords: | mmc capacitor voltage sharing parallel zpr high frequency and frequency circulation suppression |
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