三相三线制模块化多电平换流器的对称稳态分析及解耦控制

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三相三线制模块化多电平换流器的对称稳态分析及解耦控制

更新时间：2025-08-13

- 三相三线制模块化多电平换流器的对称稳态分析及解耦控制
- Automation of Electric Power Systems Vol. 39, Issue 3, Pages: 110-116(2015)
- 作者机构：
  
  清华大学电机工程与应用电子技术系,北京市,100084
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015
- 稿件说明：
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YU Xinyu. [J]. Automation of electric power systems, 2015, 39(3): 110-116.
DOI：

YU Xinyu. [J]. Automation of electric power systems, 2015, 39(3): 110-116. DOI：

摘要

通过对三相三线制模块化多电平换流器（MMC）进行数学建模

得到其网侧电流、环流、直流侧中点电位3个关键电气参量与桥臂电压不同分量之间的对应关系

并在对称稳态下分析了上述电气量所包含的谐波特征分量

提出了MMC网侧电流、环流交流分量和直流侧中点电位的解耦控制方法。仿真结果表明

提出的控制方法简单有效

可实现对网侧电流、环流交流分量和直流侧中点电位的解耦控制；各桥臂电气量保持对称

MMC可保持长期平稳运行。

Abstract

By setting up a mathematical model of a three-phase three-wire modular multilevel converter (MMC)

the correspondence relationship between the AC side current

circulating current and neutral point potential of DC side and the different components of arm voltages is obtained and the harmonics contained in the above-mentioned electrical quantities in symmetric steady-state are analyzed. A decoupled control method of AC side current

the AC component of circulating current and the neutral point potential of DC side is proposed. Simulation results show that the control method proposed is simple and effective

the decoupled control of AC side current

the AC component of circulating current and the neutral point potential of DC side is verified

and the electrical quantities of different arms remain symmetric

contributing to long-term stable operation of MMC.

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