辛业春;王朝斌;李国庆;吴学光;

• 1:华北电力大学电气与电子工程学院
• 2:东北电力大学电气工程学院
• 3:国网智能电网研究院

摘要(Abstract)：

为减少子模块开关动作次数和换流器损耗,提出了一种模块化多电平换流器(modular multilevel converter,MMC)的子模块电容电压平衡改进控制方法。采用最近电平调制方式,每个控制周期内按电容电压大小对处于投入状态和切出状态的2组子模块分别进行排序;根据需要投入的子模块数量和当前处于投入状态的子模块数量,对投入和切出的子模块状态进行改变;根据设定的电容电压允许偏差值、可进行调换的子模块数量,对投入和切出的子模块进行对调。仿真算例结果验证了所提方法的有效性。

关键词(KeyWords)： 模块化多电平换流器;子模块;电压平衡;开关频率;开关损耗

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51377016);; 国家电网公司“千人计划”专项支持项目(国家电网科[2013]1111号文)~~

作者(Author): 辛业春;王朝斌;李国庆;吴学光;

Email:

DOI: 10.13335/j.1000-3673.pst.2014.05.025

参考文献(References)：

• [1]Rodríguez J,Lai J S,Peng F Z.Multilevel inverters:a survey of topologies,controls,and applications[J].IEEE Transactions on Industrial Electronics,2002,49(4):724-738.
• [2]管敏渊,徐政,屠卿瑞,等.模块化多电平换流器型直流输电的调制策略[J].电力系统自动化,2010,34(2):48-52.Guan Minyuan,Xu Zheng,Tu Qingrui,et al.Nearest level modulation for modular multilevel converters in HVDC transmission[J].Automation of Electric Power Systems,2010,34(2):48-52(in Chinese).
• [3]王姗姗,周孝信,汤广福,等.模块化多电平电压源换流器的数学模型[J].中国电机工程学报,2011,31(24):1-8.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Modeling of modular multi-level voltage source converter[J].Proceedings of the CSEE,2011,31(24):1-8(in Chinese).
• [4]王姗姗,周孝信,汤广福,等.模块化多电平HVDC输电系统子模块电容值的选取和计算[J].电网技术,2011,35(1):26-32.Wang Shanshan,Zhou Xiaoxin,Tang Guangfu,et al.Selection and calculation for sub-module capacitance in modular multi-level converter HVDC power transmission system[J].Power System Technology,2011,35(1):26-32(in Chinese).
• [5]Saeedifard M,Iravani R.Dynamic performance of a modular multilevel back-to-back HVDC system[J].IEEE Transactions on Power Delivery,2010,25(4):2903-2912.
• [6]丁冠军,丁明,汤广福,等.新型多电平VSC子模块电容参数与均压策略[J].中国电机工程学报,2009,29(30):1-6.Ding Guanjun,Ding Ming,Tgang Guangfu,et al.Submodule capacitance parameter and voltage balancing scheme of a new multilevel VSC modular[J].Proceedings of the CSEE,2009,29(30):1-6(in Chinese).
• [7]管敏渊,徐政.MMC型VSC-HVDC系统电容电压的优化平衡控制[J].中国电机工程学报,2011,31(12):9-14.Guan Minyuan,Xu Zheng.Optimized capacitor voltage balancing control for modular multilevel converter based VSC-HVDC system[J].Proceedings of the CSEE,2011,31(12):9-14(in Chinese).
• [8]屠卿瑞,徐政,郑翔,等.一种优化的模块化多电平换流器电压均衡控制方法[J].电工技术学报,2011,26(55):15-20.Tu Qingrui,Xu Zheng,Zheng Xiang,et al.An optimized voltage balancing method for modular multilevel converter[J].Proceedings of the CSEE,2011,26(55):15-20(in Chinese).
• [9]李笑倩,宋强,刘文华,等.采用载波移相调制的模块化多电平换流器电容电压平衡控制[J].中国电机工程学报,2012,32(9):49-56.Li Xiaoqian,Song Qiang,Liu Wenhua,et al.Capacitor voltage balancing control by using carrier phase-shift modulation of modular multilevel converters[J].Proceedings of the CSEE,2012,32(9):49-56(in Chinese).
• [10]赵昕,赵成勇,李广凯,等.采用载波移相技术的模块化多电平换流器电容电压平衡控制[J].中国电机工程学报,2011,31(21):48-55.Zhao Xin,Zhao Chengyong,Li Guangkai,et al.Submodule capacitance voltage balancing of modular multilevel converter based on carrier phase shifted SPWM technique[J].Proceedings of the CSEE,2011,31(21):48-55(in Chinese).
• [11]Qin J C,Saeedifard M.Reduced switching-frequency voltage-balancing strategies for modular multilevel HVDC converters[J].IEEE Transactions on Power Delivery,2010,25(4):2903-2912.
• [12]赵岩,胡学浩,汤广福,等.模块化多电平变流器HVDC输电系统控制策略[J].中国电机工程学报,2011,31(25):35-42.Zhao Yan,Hu Xuehao,Tang Guangfu,et al.Control strategy of modular multilevel converters based HVDC transmission[J].Proceedings of the CSEE,2011,31(25):35-42(in Chinese).
• [13]Hagiwara M,Akagi H.Control and experiment of pulsewidth-modulated modular multilevel converters[J].IEEE Transactions on Power Electronics,2009,24(7):1737-1746.
• [14]许建中,赵成勇.模块化多电平换流器电容电压优化平衡控制算法[J].电网技术,2012,36(6):256-261.Xu Jianzhong,Zhao Chengyong.An optimized capacitance voltage balancing algorithm for modularized multilevel converter[J].Power System Technology,2012,36(6):256-261(in Chinese).
• [15]Fujin Deng,Zhe Chen.A control method for voltage balancing in modular multilevel converters[J].IEEE Transactions on Power Electronics,2014,29(1):66-76.
• [16]蔡新红,赵成勇,庞辉,等.基于MMC离散数学模型的MMC-HVDC系统直流电压控制[J].电网技术,2013,37(9):2403-2409.Cai Xinhong,Zhao Chengyong,Pang Hui,et al.A novel DC voltage control of MMC-HVDC power transmission system based on discrete mathematical model of MMC[J].Power System Technology,2013,37(9):2403-2409(in Chinese).
• [17]吴亚楠,汤广福,查鲲鹏,等.模块化多电平HVDC换流阀运行试验主回路数学模型及参数设计[J].电网技术,2013,37(1):65-70.Wu Yanan,Tang Guangfu,Zha Kunpeng,et al.Mathematical model and parameter design of main circuit for operational test of modular multi-level HVDC converter valves[J].Power System Technology,2013,37(1):65-70(in Chinese).
• [18]郑博文,武守远,戴朝波,等.模块化多电平换流器分桥臂电流控制策略[J].电网技术,2013,37(6):1726-1731.Zheng Bowen,Wu Shouyuan,Dai Chaobo,et al.An individual bridge-arm current control strategy for modular multilevel converter[J].Power System Technology,2013,37(6):1726-1731(in Chinese).
• [19]宋平岗,李云丰,王立娜,等.基于改进阶梯波调制的模块化多电平换流器环流抑制策略[J].电网技术,2013,37(4):1012-1018.Song Pinggang,Li Yunfeng,Wang Lina,et al.A modified ladder wave modulation-based circulating current suppressing strategy for modular multilevel converter[J].Power System Technology,2013,37(4):1012-1018(in Chinese).
• [20]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):118-124.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):118-124(in Chinese).
• [21]Gnanarathna U N,Gole A M,Jayasinghe R P.Efficient modeling of modular multilevel HVDC converters(mmc)on electromagnetic transient simulation programs[J].IEEE Transactions on Power Delivery,2011,26(1):316-324.
• [22]丁冠军,汤广福,丁明.新型多电平电压源换流器模块的拓扑机制与调制策略[J].中国电机工程学报,2009,29(36):1-8.Ding Guanjun,Tang Guangfu,Ding Ming,et al.Topology mechanism and modulation scheme of a new multilevel voltage source converter modular[J].Proceedings of the CSEE,2009,29(36):1-8(in Chinese).
• [23]Saad H,Peralta J,Dennetiere S,et al.Dynamic averaged and simplified models for MMC-based HVDC transmission systems[J].IEEE Transactions on Power Delivery,2013,28(3):1723-1730.
• [24]王奎,郑泽东,李永东.新型模块化多电平变换器电容电压波动规律及抑制方法[J].电工技术学报,2011,26(5):8-14.Wang Kui,Zheng Zedong,Li Yongdong.Voltage ripple principle and restrain method of floating capacitors in a new modular multilevel converter[J].Tansanctrions of China Elecrotechnical Society,2011,26(5):8-14(in Chinese).
• [25]Konstantinou G,Ciobotaru M,Agelidis V.Selective harmonic elimination pulse-width modulation of modular multilevel converters[J].IET Power Electronics,2013,6(1):96-107.
• [26]Hagiwara M,Akagi H.PWM control and experiment ofmodular multilevel converters[C]//Proceedings of IEEE Power Electronics Specialists Conference.Rhodes,Greece:Institute of Electrical and Electronics Engineers,2008:154-161.