Analysis of operation boundary of modular multilevel converter and control method for improving operation stability

WANG Shaowei; LIU Tianqi; LI Baohong

doi:10.16081／j.epae.201909021

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Analysis of operation boundary of modular multilevel converter and control method for improving operation stability

Control Technology in AC/DC Hybrid Power Grid | 更新时间：2026-06-30

- Analysis of operation boundary of modular multilevel converter and control method for improving operation stability
- Electric Power Automation Equipment Vol. 39, Issue 9, Pages: 151-157(2019)
- 作者机构：
  
  四川大学电气工程学院，四川成都 610065
- 作者简介：
- 基金信息：
- DOI：10.16081／j.epae.201909021
  CLC： TM 46;TM 721.1
- Received：07 March 2019，
  
  Revised：2019-07-25，
  
  Published：10 September 2019
- 稿件说明：
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王少伟,刘天琪,李保宏.模块化多电平换流器的运行边界分析及提高运行稳定性的控制方法[J].电力自动化设备,2019,39(09):151-157.

WANG Shaowei,LIU Tianqi,LI Baohong.Analysis of operation boundary of modular multilevel converter and control method for improving operation stability[J].Electric Power Automation Equipment,2019,39(09):151-157.
王少伟,刘天琪,李保宏.模块化多电平换流器的运行边界分析及提高运行稳定性的控制方法[J].电力自动化设备,2019,39(09):151-157. DOI： 10.16081／j.epae.201909021.

WANG Shaowei,LIU Tianqi,LI Baohong.Analysis of operation boundary of modular multilevel converter and control method for improving operation stability[J].Electric Power Automation Equipment,2019,39(09):151-157. DOI： 10.16081／j.epae.201909021.

摘要

在分析模块化多电平换流器（MMC）稳定运行应满足多种约束条件的基础上，推导了MMC的运行边界；以换流器向交流系统注入的有功功率、无功功率为指标，建立了用于描述换流器运行特性的

P-Q

功率域；分析了影响换流器运行边界的多种因素，并详细阐述了交流系统阻抗对换流器有功传输能力的影响；以增大换流器稳定运行范围为优化目标，提出了一种基于虚拟阻抗控制的优化方法。

Abstract

Based on the analysis that the stable operation of MMC（Modular Multilevel Converter） should satisfy various constraints，the operation boundary of MMC is deduced. Taking the active power and reactive power injected into the AC system as the index，the

P-Q

power domain for describing the operation characteristics of converter is established. The various factors affecting the operation boundary of the converter are analyzed，and the influence of AC system impedance on the active power transmission capability of the converter is expounded in detail. In order to increase the stable operation range of converter，an optimization method based on virtual impedance control is proposed.

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references

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