Three-phase Multiplexing Submodule MMC and Its Wide Range Optimization Modulation Strategy

LAN Jianxi; CHEN Wu; HAO Zeyu; ZHAO Haixi; ZHOU Desheng; {{custom_author.name_en}}

doi:10.13334/j.0258-8013.pcsee.242071

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Three-phase Multiplexing Submodule MMC and Its Wide Range Optimization Modulation Strategy

更新时间：2026-10-12

- Three-phase Multiplexing Submodule MMC and Its Wide Range Optimization Modulation Strategy
- Vol. 46, Issue 8, Pages: 3382-3395(2026)
- 作者机构：
  
  1. 1
  2. 东南大学电气工程学院,江苏省,南京市,210096
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.242071
  CLC：
- Received：14 October 2025，
  
  Published：2026
- 稿件说明：
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LAN Jianxi, CHEN Wu, HAO Zeyu, et al. Three-phase Multiplexing Submodule MMC and Its Wide Range Optimization Modulation Strategy[J]. 2026, 46(8): 3382-3395.
DOI：

LAN Jianxi, CHEN Wu, HAO Zeyu, et al. Three-phase Multiplexing Submodule MMC and Its Wide Range Optimization Modulation Strategy[J]. 2026, 46(8): 3382-3395. DOI： 10.13334/j.0258-8013.pcsee.242071.

摘要

随着沙戈荒及海上风电大规模新能源开发与利用，对模块化多电平换流器(modular multilevel converter，MMC)低成本与轻型化需求更加迫切。三相桥臂复用型模块化多电平变换器(three-phase multiplexing arm MMC，TPMA-MMC)凭借良好的运行特性与经济性，为新能源送出提供一种新型技术方案。然而，TPMA-MMC调制范围有限，且复用电路中三相开关桥面临器件串联均压问题。为解决以上问题，该文提出一种三相复用子模块型MMC(three-phase multiplexing submodule MMC，TMS-MMC)拓扑及宽范围优化调制方法，通过构造一种新型三相复用子模块拓扑，实现复用电路模块化，解决三相开关桥器件串联问题。此外，基于所提宽范围调制方法，有效拓宽能量平衡调节范围，实现TMS-MMC[0

1]宽范围调制。理论分析表明，相比传统MMC、TPMA-MMC，所提拓扑在子模块数量、运行损耗和电容储能等方面均表现出优异特征。最后，搭建 ±10 kV/1 MW仿真系统及原理性样机对所提拓扑和调制原理进行验证。

Abstract

With the large-scale renewable energy development and utilization of desert

gobi

desertification area and offshore wind farms

the demand for low-cost and lightweight modular multilevel converter (MMC) has become more urgent. The three-phase multiplexing arm MMC (TPMA-MMC) provides a new technical solution for the delivery of new energy with its excellent operating characteristics and economy. However

TPMA-MMC faces the narrow operation range and the series connection of devices in the three-phase switching bridge. To address these issues

this article proposes a three-phase multiplexing submodule MMC (TMS-MMC) and introduces an optimization modulation strategy. By constructing a three-phase multiplexing submodule

it realizes multiplexing arm modularization and solves the series connection of devices. Moreover

based on the proposed wide multiplexing period modulation scheme

it extends energy regulation range and further achieves the modulation range to [0

1]. Additionally

theoretical analysis demonstrates that

compared to MMC and TPMA-MMC

TMS-MMC exhibits its outstanding characteristics in terms of submodule quantity

operational losses

and energy storages

et al. Finally

a ±10 kV/1 MW simulation system and a scale-down prototype are developed to validate the proposed topology and modulation principle.

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