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1、SmartGrid智能电网,2017,7(2),97-104PublishedOnlineApril2017inHans.http://www.hanspub.org/journal/sghttps://doi.org/10.12677/sg.2017.72011Capacitance-VoltageBalancingControlMethodfortheSubmoduleofModularMultilevelConverterBasedontheRapidSequencingMethodMaolinTang1,Chao
2、Xiao2,JinxinOuyang2,RuiYu1,XiZhang1,XiaofuXiong21StateGridSouthwestDivision,ChengduSichuan2StateKeyLaboratoryofPowerTransmissionEquipment&SystemSecurityandNewTechnology,ChongqingUniversity,ChongqingthththReceived:Apr.13,2017;accepted:Apr.27,2017;published:Apr.30,
3、2017AbstractWiththeimprovementoftheengineeringcapacityandtheDCvoltagelevelofFACTSbasedonmodularmultilevelconverter(MMC),itisputtingforwardhigherrequirementforcapacitorbal-ancecontrolissueofMMCsub-modules(SMs).Inordertoreducethecomputationalcomplexityofvoltagebala
4、ncingsortingofSMsandswitchingdissipationofMMC,anewvoltagebalancingcon-trolimprovedalgorithmbasedonQuickSortmethodanddividedconquerwaspresentedinthispaper:dividingintogroupstwiceaccordingtotheswitchingcontrolinstructionaswellascharg-inganddischargingactivestatusof
5、bridgearmsineachcontrolcycle;thenchoosingtheSMswhichhavelargedifferencewithratedvoltagewithintheminimumrangeonthebasisofspecificswitchingnumber;avoidingtheprophecyofcollatingallSMsrepeatedly.AMMCmodelhasbeensetuponthePSCAD.Finally,theeffectivenessofthedesigncontr
6、olmethodwasverified.There-sultsshowthatthisvoltagebalancingmethodcanberealizedeffectivelyunderlowswitchingdis-sipationandlowrankingcalculation.KeywordsModularMultilevelConverter(MMC),Sub-Module,Capacitance-VoltageBalancingControl,TheRapidSequencingMethod,Switchin
7、gFrequency基于快速排序法的MMC电容电压均衡控制策略122112唐茂林,肖超,欧阳金鑫,余锐,张茜,熊小伏1国家电网公司西南分部,四川成都文章引用:唐茂林,肖超,欧阳金鑫,余锐,张茜,熊小伏.基于快速排序法的MMC电容电压均衡控制策略[J].智能电网,2017,7(2):97-104.https://doi.org/10.12677/sg.2017.72011唐茂林等2重庆大学输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆收稿日期:2017年4月13日;录用日期:2017年4月27日;发布日期:2
8、017年4月30日摘要随着基于模块化多电平换流器的柔性直流输电工程容量和直流侧电压等级的提高,对子模块电容平衡控制提出了更高的要求。为降低众多子模块均压排序的计算量及MMC开关损耗,提出一种基于分治思想和快速排序算法的改进子模块电容电压均衡控制策略。根据每个控制周期的投切控制指令和桥臂充放电状态,将待投切子模块电容电