A Design Method of Hybrid MMC Full-bridge Submodule Proportion Applied to DC Traction Power Supply System for Urban Rail Transit

doi:10.11930/j.issn.1004-9649.202011100

Abstract

Abstract: The characteristic of urban rail DC traction power supply system is low voltage and large current. The capacity of a converter fails to meet the demand, limited by the current capacity of the switching device. Hybrid modular multilevel converter (MMC) is composed of full-bridge submodule and half-bridge submodule. It can be used in systems with modulation ratio greater than one. Utilizing the negative level output capability of the full-bridge submodule, the increase of the AC voltage or the reduction of the DC voltage can be achieved. This article is aimed at the hybrid MMC that can be applied in the DC traction power supply system and proposes a design method for the proportion of full-bridge submodule. This method meets the needs of high modulation ratio steady state operation and DC fault clearing capability. A 1 500 V subway system is selected as an example and three sets of parameters are also selected. The simulation model was built in PSCAD software to verify the correctness of the design method.

Key words: modular multilevel converter, hybrid MMC, proportion of full-bridge submodule, DC traction power supply

XI Yanna, LI Xiaotong, LI Ziming, WEI Yingdong, LI Xiaoqian, WANG Fangmin, LI Wei, LI Weirui. A Design Method of Hybrid MMC Full-bridge Submodule Proportion Applied to DC Traction Power Supply System for Urban Rail Transit[J]. Electric Power, 2022, 55(4): 54-62.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202011100

https://www.electricpower.com.cn/EN/Y2022/V55/I4/54

References

[1] 李群湛. 城市轨道交通交流牵引供电系统及其关键技术[J]. 西南交通大学学报, 2015, 50(2): 199–207
LI Qunzhan. Industrial frequency single-phase AC traction power supply system and its key technologies for urban rail transit[J]. Journal of Southwest Jiaotong University, 2015, 50(2): 199–207
[2] 李良威, 李群湛, 刘炜. 24脉波整流器外特性仿真及其在城市轨道交通中的应用[J]. 城市轨道交通研究, 2007(10): 52–55
LI Liangwei, LI Qunzhan, LIU Wei. Simulation and application of external characteristic curve of 24-pulse rectifier in urban rail transit[J]. Urban Mass Transit, 2007(10): 52–55
[3] 文春雷, 刘建军, 詹宏, 等. 城市轻轨供电系统对公共电网电能质量的影响研究[J]. 电力建设, 2011, 32(8): 5–10
WEN Chunlei, LIU Jianjun, ZHAN Hong, et al. Effects of power supply system of metro light rail on power quality of public electricity grid[J]. Electric Power Construction, 2011, 32(8): 5–10
[4] KONISHI T, HASE S, OKUI A, et al. Development of PWM converter with large capacity for electric railway substation[C]//The fifth international conference on power electronics and drive systems. Singapore: IEEE, 2003: 1264-1267.
[5] 陈德胜. 城轨新型能馈式牵引供电集成技术研究及实现[D]. 北京: 北京交通大学, 2014.
CHEN Desheng. Research and realization of integration technology for the new energy feedback traction power supply in the urban rail transit[D]. Beijing: Beijing Jiaotong University, 2014.
[6] CORNIC D. Efficient recovery of braking energy through a reversible dc substation[C]//Electrical systems for aircraft, railway and ship propulsion. Italy: IEEE, 2010: 1-9.
[7] 郑旺. 城市轨道交通牵引供电双向变流器应用研究[D]. 徐州: 中国矿业大学, 2019.
ZHENG Wang. Application and research on bidirectional converter of traction power supply for urban rail transit[D]. Xuzhou: China University of Mining and Technology, 2019.
[8] LESNICAR A, MARQUARDT R. An innovative modular multilevel converter topology suitable for a wide power range[C]//2003 IEEE bologna power tech conference proceedings. Italy: IEEE, 2003: 6.
[9] 陈磊, 何慧雯, 王磊, 等. 基于半桥型MMC的柔性直流电网故障限流方法综述[J]. 电力系统保护与控制, 2021, 49(21): 175–186
CHEN Lei, HE Huiwen, WANG Lei, et al. Review of the fault current limiting approaches for a flexible DC grid based on a half-bridge MMC[J]. Power System Protection and Control, 2021, 49(21): 175–186
[10] 宋强, 刘文华, 李笑倩, 等. 模块化多电平换流器稳态运行特性的解析分析[J]. 电网技术, 2012, 36(11): 198–204
SONG Qiang, LIU Wenhua, LI Xiaoqian, et al. An analytical method for analysis on steady-state operating characteristics of modular multilevel converter[J]. Power System Technology, 2012, 36(11): 198–204
[11] 汤广福, 贺之渊, 庞辉. 柔性直流输电工程技术研究、应用及发展[J]. 电力系统自动化, 2013, 37(15): 3–14
TANG Guangfu, HE Zhiyuan, PANG Hui. Research, application and development of VSC-HVDC engineering technology[J]. Automation of Electric Power Systems, 2013, 37(15): 3–14
[12] 樊云龙, 任建文, 叶小晖, 等. 基于MMC的渝鄂直流背靠背联网工程控制策略研究[J]. 中国电力, 2019, 52(4): 96–103
FAN Yunlong, REN Jianwen, YE Xiaohui, et al. Study on control strategy of back to back MMC-HVDC connecting Chongqing and Hubei power grid[J]. Electric Power, 2019, 52(4): 96–103
[13] LU M Z, HU J B, ZENG R, et al. Imbalance mechanism and balanced control of capacitor voltage for a hybrid modular multilevel converter[J]. IEEE Transactions on Power Electronics, 2018, 33(7): 5686–5696.
[14] 花雅文, 李庚, 韩国栋, 等. 混合背靠背模块化多电平变换器设计[J]. 智慧电力, 2021, 49(8): 70–76
HUA Yawen, LI Geng, HAN Guodong, et al. Design of hybrid back-to-back modular multilevel converter[J]. Smart Power, 2021, 49(8): 70–76
[15] 赵成勇, 许建中, 李探. 全桥型MMC-MTDC直流故障穿越能力分析[J]. 中国科学:技术科学, 2013, 43(1): 106–114
ZHAO Chengyong, XU Jianzhong, LI Tan. DC faults ride-through capability analysis of Full-Bridge MMC-MTDC System[J]. Scientia Sinica(Technologica), 2013, 43(1): 106–114
[16] HU J B, XIANG M C, LIN L, et al. Improved design and control of FBSM MMC with boosted AC voltage and reduced DC capacitance[J]. IEEE Transactions on Industrial Electronics, 2018, 65(3): 1919–1930.
[17] 李少华, 王秀丽, 李泰, 等. 混合式MMC及其直流故障穿越策略优化[J]. 中国电机工程学报, 2016, 36(7): 1849–1858
LI Shaohua, WANG Xiuli, LI Tai, et al. Optimal design for hybrid MMC and its DC fault ride-through strategy[J]. Proceedings of the CSEE, 2016, 36(7): 1849–1858
[18] 孟新涵, 李可军, 王卓迪, 等. 混合型MMC拓扑及应用于MTDC直流故障穿越能力分析[J]. 电力系统自动化, 2015, 39(24): 72–79
MENG Xinhan, LI Kejun, WANG Zhuodi, et al. A hybrid MMC topology and its DC fault ride-through capability analysis when applied to MTDC system[J]. Automation of Electric Power Systems, 2015, 39(24): 72–79
[19] 李国庆, 张林, 江守其, 等. 风电经双极混合型MMC-HVDC并网的直流故障穿越协调控制策略[J]. 电力系统保护与控制, 2021, 49(10): 27–36
LI Guoqing, ZHANG Lin, JIANG Shouqi, et al. Coordinated control strategies for DC fault ride-through of wind power integration via bipolar hybrid MMC-HVDC overhead lines[J]. Power System Protection and Control, 2021, 49(10): 27–36
[20] 蒋纯冰, 王鑫, 赵成勇. 混合型MMC全桥子模块的配置比例优化设计[J]. 华北电力大学学报(自然科学版), 2020, 47(4): 10–18
JIANG Chunbing, WANG Xin, ZHAO Chengyong. Configuration proportion optimization design of hybrid MMC full-bridge submodule[J]. Journal of North China Electric Power University (Natural Science Edition), 2020, 47(4): 10–18
[21] 冯谟可, 郭裕群, 许建中, 等. 混合型MMC启动策略及全桥子模块数目配置研究[J]. 华北电力大学学报(自然科学版), 2017, 44(6): 28–35
FENG Moke, GUO Yuqun, XU Jianzhong, et al. Start-up control strategies of hybrid MMC and configuration of FBSM[J]. Journal of North China Electric Power University (Natural Science Edition), 2017, 44(6): 28–35
[22] LIN W X, JOVCIC D, NGUEFEU S, et al. Full-bridge MMC converter optimal design to HVDC operational requirements[J]. IEEE Transactions on Power Delivery, 2016, 31(3): 1342–1350.
[23] ZENG R, XU L, YAO L Z, et al. Design and operation of a hybrid modular multilevel converter[J]. IEEE Transactions on Power Electronics, 2015, 30(3): 1137–1146.
[24] 林卫星, 文劲宇, 刘伟增. 架空柔性直流输电系统全桥模块比例设计与无闭锁控制[J]. 南方电网技术, 2018, 12(2): 3–11
LIN Weixing, WEN Jinyu, LIU Weizeng. Full bridge sub-module proportion design and non-blocking control of overhead MMC-HVDC transmission system[J]. Southern Power System Technology, 2018, 12(2): 3–11
[25] 林艺哲, 林磊, 徐晨. 稳态负电平输出下的混合型MMC设计方法[J]. 中国电机工程学报, 2018, 38(14): 4202–4211,4326
LIN Yizhe, LIN Lei, XU Chen. A design method of hybrid modular multilevel converter with negative output in steady state[J]. Proceedings of the CSEE, 2018, 38(14): 4202–4211,4326
[26] 孔明, 汤广福, 贺之渊. 子模块混合型MMC-HVDC直流故障穿越控制策略[J]. 中国电机工程学报, 2014, 34(30): 5343–5351
KONG Ming, TANG Guangfu, HE Zhiyuan. A DC fault ride-through strategy for cell-hybrid modular multilevel converter based HVDC transmission systems[J]. Proceedings of the CSEE, 2014, 34(30): 5343–5351