MMC功率损耗优化环流控制方法

YUE Yufei; ZHANG Yawen; WANG Libang; WANG Wen; LIU Haoyu

doi:10.13336/j.1003-6520.hve.20250527

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MMC功率损耗优化环流控制方法

更新时间：2026-09-16

- MMC功率损耗优化环流控制方法
- Vol. 52, Issue 5, Pages: 2387-2396(2026)
- 作者机构：
  
  长沙理工大学电网防灾减灾全国重点实验室,长沙,410114
- 作者简介：
- 基金信息：
- DOI：10.13336/j.1003-6520.hve.20250527
  CLC：
- Received：31 May 2026，
  
  Published：2026
- 稿件说明：
移动端阅览
YUE Yufei, ZHANG Yawen, WANG Libang, et al. MMC功率损耗优化环流控制方法[J]. 2026, 52(5): 2387-2396.
DOI：

YUE Yufei, ZHANG Yawen, WANG Libang, et al. MMC功率损耗优化环流控制方法[J]. 2026, 52(5): 2387-2396. DOI： 10.13336/j.1003-6520.hve.20250527.

摘要

模块化多电平变换器(modular multilevel converter，MMC)在进行环流控制时存在损耗增大问题，制约了其运行效率的改善。为此，针对MMC器件导通损耗和开关损耗，构建功率损耗模型，提出了损耗优化环流控制方法，对注入的直流环流分量与二倍频环流幅值大小关系进行了讨论，在此基础上对注入环流的幅值和相位进行最优值求解，实现功率损耗全局优化。同时，对所提方法进行性能分析，揭示功率损耗与电容电压波动之间的影响机制。仿真与实验测试结果验证了所提方法的可行性和有效性。

Abstract

Modular multilevel converters(MMC) face challenges of increased power losses during circulating current control

which restricts the improvement of their operational efficiency. To address this issue

a power loss model is constructed for the conduction and switching losses of MMC devices

and a loss-optimized circulating current control method is proposed. The relationship between the injected DC circulating current component and the amplitude of the double-frequency circulating current is discussed. Based on this

the optimal values of the amplitude and phase of the injected circulating current are solved to achieve global optimization of power loss. Meanwhile

the performance of the proposed method is analyzed to reveal the influence mechanism between power loss and capacitor voltage ripple. Simulation and experimental tests verify the feasibility and effectiveness of the proposed method.

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