| MMC-HVDC系统数学模型及其控制策略 |
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| 引用本文： | 曹春刚,赵成勇,陈晓芳.MMC-HVDC系统数学模型及其控制策略[J].电力系统及其自动化学报,2012,24(4):13-18. |
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| 作者姓名： | 曹春刚 赵成勇 陈晓芳 |
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| 作者单位： | 华北电力大学(保定)电气与电子工程学院,保定,071003 |
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| 基金项目： | “十一五”国家科技支撑计划重大项目，高等学校学科创新引智计划 |
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| 摘 要： | 模块化多电平换流器MMC(modular multilevel converter)是电压源换流器型直流输电领域的一种新型拓扑,与传统的两电平存在一定的不同,因而对其建模及控制策略进行研究,有重要的意义。论文介绍了MMC的拓扑结构及工作原理。在考虑桥臂电抗的基础上,推导出模块化多电平换流器型直流输电MMC-HVDC(modular multilevel converter-high voltage direct current)的数学模型,进一步得到MMC-HVDC的简化电路图。在PSCAD/EMTDC下搭建了21电平MMC-HVDC系统,在dq同步旋转坐标系下,采用前馈解耦控制策略进行仿真研究,仿真结果验证了该数学模型的正确性和控制策略的有效性。
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| 关 键 词： | 模块化多电平换流器 桥臂电抗 数学模型 简化电路图 控制策略 |
Mathematical Model and Control Strategy of MMC-HVDC |
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| CAO Chun-gang
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ZHAO Cheng-yong
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CHEN Xiao-fang.Mathematical Model and Control Strategy of MMC-HVDC[J].Proceedings of the CSU-EPSA,2012,24(4):13-18. |
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| Authors: | CAO Chun-gang ZHAO Cheng-yong CHEN Xiao-fang |
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| Affiliation: | (College of Electrical and Electronic Engineering,North China Electric Power University, Baoding 071003,China) |
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| Abstract: | Modular multilevel converter(MMC) is a new topology in VSC-HVDC,which is different from the conventional two level VSC.Therefore,it is significant to study the modeling and control strategy of MMC-HVDC.The topology and working principle of MMC are introduced in this paper.Considering the reactance of the bridge,the mathematic model of the MMC-HVDC was developed,and the simplified circuit diagram of MMC-HVDC was obtained.The 21-level MMC-HVDC system was constructed in PSCAD/EMTDC environment.In the synchronous dq reference frame,the feed forward compensation control strategy is applied,and the simulation results verify that the mathematical model is correct and the control strategy is effective. |
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| Keywords: | modular multilevel converter(MMC) reactance of the bridge mathematic model simplified circuit diagram control strategy |
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