电源学报

新型串联式混合桥臂MMC分析研究

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张熙 , 姚江 , 钟启濠 , 刘国兵

电源学报 | DC-AC逆变器 2025,23(5): 88-95

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电源学报 |DC-AC逆变器 2025 , 23 (5) : 88 -95

新型串联式混合桥臂MMC分析研究

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钟启濠（1993—　），男，硕士，工程师。研究方向：电力电子与控制，变电继保。E-mail：835063137@qq.com。

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钟启濠（1993—　），男，硕士，工程师。研究方向：电力电子与控制，变电继保。E-mail：835063137@qq.com。

刘国兵（1992—　），男，本科，助理工程师。研究方向：基建工程管理。E-mail：764800288@qq.com。

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刘国兵（1992—　），男，本科，助理工程师。研究方向：基建工程管理。E-mail：764800288@qq.com。

张熙, 姚江, 钟启濠, 刘国兵

作者信息

广东电网有限责任公司东莞供电局，东莞　523000

通讯作者:

姚江（1981—　），男，通信作者，本科，工程师。研究方向：基建工程建设。E-mail：3469134513@qq.com。

作者简介:

张熙（1990—　），男，本科，工程师。研究方向：基建工程建设。E-mail：190600558@qq.com。

钟启濠（1993—　），男，硕士，工程师。研究方向：电力电子与控制，变电继保。E-mail：835063137@qq.com。

刘国兵（1992—　），男，本科，助理工程师。研究方向：基建工程管理。E-mail：764800288@qq.com。

Analysis of Novel Series-connected Hybrid-leg MMC

Xi ZHANG, Jiang YAO, Qihao ZHONG, Guobing LIU

Affiliations

Dongguan Power Supply Bureau, Guangdong Power Grid Co., Ltd., Dongguan 523000, China

出版时间: 2025-09-30 doi: 10.13234/j.issn.2095-2805.2025.5.88

文章导航

摘要

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高压柔性直流输电系统中，模块化多电平换流器MMC（modular multilevel converter）有其独特优势。相比于MMC，子模块与IGBT构成的混合桥臂MMC即HL-MMC（hybrid-leg MMC）在相同的子模块数量下，输出电压电平数增加了1倍，输出电压谐波含量少，直流母线电压利用率提高了1倍。串联型HL-MMC即SC-HL-MMC（series-connected HL-MMC）由3个单相HL-MMC构成，直流母线电压相同的情况下，子模块数量可减少2/3。为了具备直流短路故障容错能力，采用由半桥子模块与全桥子模块构成的混合式SC-HL-MMC，分析满足故障穿越的全桥子模块与半桥子模块的配比方案。为验证所提拓扑的有效性，搭建仿真模型。仿真结果表明：额定工况下，SC-HL-MMC可输出稳定的谐波含量少的三相电压，直流短路故障工况下，SC-HL-MMC能迅速阻断短路电流，验证了该拓扑的有效性。

关键词

串联式混合桥臂模块化多电平换流器 / 直流短路故障 / 柔性直流输电

Abstract

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In a high-voltage flexible DC power transmission system, the modular multilevel converter (MMC) has unique advantages. Compared with those of the ordinary MMC, the output voltage levels of a hybrid-leg MMC (HL-MMC) consisting of submodules (SMs) and IGBT are doubled, the harmonic content of output voltage is reduced, and the DC bus voltage utilization is also doubled under the condition of the same number of SMs. The series-connected HL-MMC (SC-HL-MMC) is composed of three single-phase HL-MMCs, and its number of SMs is reduced by 2/3 under the condition of the same DC bus voltage. To be equipped with a DC short-circuit fault-tolerant capability, a hybrid SC-HL-MMC consisting of half bridge SMs (HBSMs) and full bridge SMs (FBSMs) is applied, and the scheme of optimal ratio between FBSMs and HBSMs is analyzed to satisfy the short-circuit fault ride-through requirement. To verify the performance of the proposed topology, a simulation model is built. Simulation results show that the stable three-phase output voltage from the SC-HL-MMC contains less harmonic under the rated operation condition, and it can block the short-circuit current rapidly under the DC short-circuit fault condition, thereby verify the validity of this topology.

Key words

Series-connected hybrid-leg modular multilevel converter (SC-HL-MMC) / DC short-circuit fault / flexible DC power transmission

引用本文

张熙, 姚江, 钟启濠, 刘国兵. 新型串联式混合桥臂MMC分析研究. 电源学报, 2025 , 23 (5) : 88 -95 . DOI: 10.13234/j.issn.2095-2805.2025.5.88

Xi ZHANG, Jiang YAO, Qihao ZHONG, Guobing LIU. Analysis of Novel Series-connected Hybrid-leg MMC[J]. Journal of Power Supply, 2025 , 23 (5) : 88 -95 . DOI: 10.13234/j.issn.2095-2805.2025.5.88

参考文献

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2025年第23卷第5期

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doi: 10.13234/j.issn.2095-2805.2025.5.88

接收时间：2022-06-11
首发时间：2026-10-26
出版时间：2025-09-30

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收稿日期：2022-06-11
修回日期：2022-10-17
录用日期：2022-10-21

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作者信息

广东电网有限责任公司东莞供电局，东莞　523000

通讯作者:

姚江（1981—　），男，通信作者，本科，工程师。研究方向：基建工程建设。E-mail：3469134513@qq.com。

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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