基于环流解析分析的MMC电容电压优化控制策略
|
摘要
为限制MMC子模块电容电压波动,一般所需电容较大。首先分析二倍频环流与电容电压波动间的解析关系,提出了全工况范围内的子模块电容电压波动峰值与二倍频环流之间关系的数学模型。然后利用该模型,提出以电容电压波动为目标值的二倍频环流注入方式,将电容电压波动峰值控制在设定参考值。该方法不仅能在在全工况下实现控制目标,而且通过减小峰值电流增加安全裕度。最后,通过仿真及试验结果验证了所提模型的正确性与优化控制策略的有效性。
Bulk capacitor is used to limit capacitor voltage ripple in modular multilevel converter(MMC). First,we propose a mathematical model which depicts the relationship between the peak value of capacitor voltage ripple and the 2 nd–order circulating current in various conditions by studying the analytic relationship between them. Then, the peak value of capacitor voltage ripple is controlled to the reference by injecting 2 nd –order circulating current with the aim of acceptable capacitor voltage ripple. The method can not only achieve the control destination, but also reduce arm current to improve margin of safety. Finally, the simulation and experimental results verity the validity of the proposed method.
Bulk capacitor is used to limit capacitor voltage ripple in modular multilevel converter(MMC). First,we propose a mathematical model which depicts the relationship between the peak value of capacitor voltage ripple and the 2 nd–order circulating current in various conditions by studying the analytic relationship between them. Then, the peak value of capacitor voltage ripple is controlled to the reference by injecting 2 nd –order circulating current with the aim of acceptable capacitor voltage ripple. The method can not only achieve the control destination, but also reduce arm current to improve margin of safety. Finally, the simulation and experimental results verity the validity of the proposed method.
引文
[1]MARQUARDTR,LESNICARA.Anewmodularvoltagesourceinverter topology[C]∥Proceedings of European Conference on PowerElectronics and Applications. Toulouse, France:EPE, 2003:1-10.
[2]常浩,陈东,吴延坤,等.厦门柔性直流输电工程功率突变现象及优化策略[J].高电压技术,2016,42(10):3045-3050.CHANG Hao, CHEN Dong, WU Yankun, et al. Analysis and optimi-zationstrategyofpowerdisturbanceonXiamenflexibleHVDCproject[J]. High Voltage Engineering, 2016, 42(10):3045-3050.
[3]MARQUARDT R. New concept for high voltage-modular multilevelconverter[C]∥Proceedings of the 34th IEEE Annual Power Electron-ics Specialists Conference. Aachen, Germany:IEEE, 2003:20-25.
[4]郭子轩,韩永霞,赵宇明,等.基于柔性直流的配电系统关键设备暂态电流研究[J].高电压技术,2017,43(4):1280-1288.GUO Zixuan, HAN Yongxia, ZHAO Yuming, et al. Study on transientcurrent of the key equipment in flexible DC power distribution sys-tem[J]. High Voltage Engineering, 2017, 43(4):1280-1288.
[5]GENMELL B, DORN J, RETZMANN D, et al. Poospects of multi-levelVSCtechnologiesforpowertransmission[C]∥IEEET&DConference and exposition. Chicago, USA:IEEE, 2008:1-16.
[6]马文忠,江丽丽,李林欢,等.模块化多电平变换器容错运行环流抑制策略[J].高电压技术,2014,40(11):3513-3518.MAWenzhong,JIANGLili,LILinhuan,etal.Circulatingcurrentsuppressing strategy of modular multilevel converter in fault-tolerantcontrol mode[J]. High Voltage Engineering, 2014, 40(11):3513-3518.
[7]李国庆,辛业春,吴学光.模块化多电平换流器桥臂电流分析及其环流抑制方法[J].电力系统自动化,2014,38(24):62-67.LIGuoqing,XINYechun,WUXueguang.Armcurrentanalysisofmodularmultilevelconverteranditscirculatingcurrentsuppressingmethod[J].AutamationofElectricPowerSystems,2014,38(24):62-67.
[8]宋平岗,林家通,李云丰.基于MMC的铁路功率调节器的环流分析与抑制策略[J].高电压技术,2016,42(11):3539-3547.SONG Pinggang, LIN Jiatong, LI Yunfeng. Circulating current analy-sis and suppressing controller designing of the MMC based on railwaystatic power conditioner[J]. High Voltage Engineering, 2016, 42(11):3539-3547.
[9]杨晓峰,郑琼林.基于MMC环流模型的通用环流抑制策略[J].中国电机工程学报,2012,32(18):59-65.YANGXiaofeng,ZHENGQionglin.AnoveluniversalcirculatingcurrentsuppressingstrategybasedontheMMCcirculatingcurrentmodel[J]. Proceedings of the CSEE, 2012, 32(18):59-65.
[10]宋强,刘文华,李笑倩,等.模块化多电平变换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. A analytical methodfor analysis on steady-state operating characteristics of modular multi-level converter[J]. Power System Technology, 2012, 36(11):198-204.
[11]TUQ,XUZ,XUL.Reducedswitching-frequencymodulationandcirculatingcurrentsuppressionformodularmultilevelconverters[J].IEEE Transactions on Power Delivery, 2011, 26(3):2009-2017.
[12]PICAS R, POU J, CEBALLOS S, et al. Minimization of the capacitorvoltagefluctuationsofamodularmultilevelconverterbycirculatingcurrentcontrol[C]∥ProceedingsofAnnualConferenceonIEEEIn-dustrialElectronicsSociety.Montreal,Canada:IEEE,2012:4985-4991.
[13]ENGEL S P, DE DONCKER R W. Control of the modular multi-levelconverter for minimized cell capacitance[C]∥Proceeding of EuropeanConference on Power Electronics and Applications(EPE 2011). Bir-mingham, Britain:IEEE, 2011:1-10.
[14]WINKELNKEMPERM,KORNA,STEIMERP.Amodulardirectconverter for transformerless rail interties[C]∥Proceeding of Interna-tionalSymposium on IndustrialElectronics(ISIE 2010). Bari, Italy:IEEE, 2010:562-567.
[15]ILVES K,ANTONOPOULOSA,HARNEFORSL,etal.Capacitorvoltage ripple shaping in modular multilevel converters allowing foroperating region extension[C]∥Proceedings of Annual Conference onIEEE Industrial Electronics Society. Melbourne, America:IEEE, 2011:4403-4408
[16]ILVESK,ANTONOPOULOSA,NORRGAS,etal.Steady-stateanalysis of interaction between harmonic components of arm and linequantities of modular multilevel converters[J]. IEEE Transactions onIndustrial Electronics, 2012, 27(1):57-68.
[17]SONGQ,LIU W H,LIXQ.A steady-stateanalysismethod foramodularmultilevelconverter[J].IEEETransactionsonPowerElec-tronics, 2013, 28(8):3702-3713.
[18]LI X Q, LIU W H, SONG Q. Performance analysis and optimizationofcirculatingcurrentcontrolformodularmultilevelconverter[J].IEEE Transactions on Power Electronics, 2016, 63(2):716-726.
[2]常浩,陈东,吴延坤,等.厦门柔性直流输电工程功率突变现象及优化策略[J].高电压技术,2016,42(10):3045-3050.CHANG Hao, CHEN Dong, WU Yankun, et al. Analysis and optimi-zationstrategyofpowerdisturbanceonXiamenflexibleHVDCproject[J]. High Voltage Engineering, 2016, 42(10):3045-3050.
[3]MARQUARDT R. New concept for high voltage-modular multilevelconverter[C]∥Proceedings of the 34th IEEE Annual Power Electron-ics Specialists Conference. Aachen, Germany:IEEE, 2003:20-25.
[4]郭子轩,韩永霞,赵宇明,等.基于柔性直流的配电系统关键设备暂态电流研究[J].高电压技术,2017,43(4):1280-1288.GUO Zixuan, HAN Yongxia, ZHAO Yuming, et al. Study on transientcurrent of the key equipment in flexible DC power distribution sys-tem[J]. High Voltage Engineering, 2017, 43(4):1280-1288.
[5]GENMELL B, DORN J, RETZMANN D, et al. Poospects of multi-levelVSCtechnologiesforpowertransmission[C]∥IEEET&DConference and exposition. Chicago, USA:IEEE, 2008:1-16.
[6]马文忠,江丽丽,李林欢,等.模块化多电平变换器容错运行环流抑制策略[J].高电压技术,2014,40(11):3513-3518.MAWenzhong,JIANGLili,LILinhuan,etal.Circulatingcurrentsuppressing strategy of modular multilevel converter in fault-tolerantcontrol mode[J]. High Voltage Engineering, 2014, 40(11):3513-3518.
[7]李国庆,辛业春,吴学光.模块化多电平换流器桥臂电流分析及其环流抑制方法[J].电力系统自动化,2014,38(24):62-67.LIGuoqing,XINYechun,WUXueguang.Armcurrentanalysisofmodularmultilevelconverteranditscirculatingcurrentsuppressingmethod[J].AutamationofElectricPowerSystems,2014,38(24):62-67.
[8]宋平岗,林家通,李云丰.基于MMC的铁路功率调节器的环流分析与抑制策略[J].高电压技术,2016,42(11):3539-3547.SONG Pinggang, LIN Jiatong, LI Yunfeng. Circulating current analy-sis and suppressing controller designing of the MMC based on railwaystatic power conditioner[J]. High Voltage Engineering, 2016, 42(11):3539-3547.
[9]杨晓峰,郑琼林.基于MMC环流模型的通用环流抑制策略[J].中国电机工程学报,2012,32(18):59-65.YANGXiaofeng,ZHENGQionglin.AnoveluniversalcirculatingcurrentsuppressingstrategybasedontheMMCcirculatingcurrentmodel[J]. Proceedings of the CSEE, 2012, 32(18):59-65.
[10]宋强,刘文华,李笑倩,等.模块化多电平变换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. A analytical methodfor analysis on steady-state operating characteristics of modular multi-level converter[J]. Power System Technology, 2012, 36(11):198-204.
[11]TUQ,XUZ,XUL.Reducedswitching-frequencymodulationandcirculatingcurrentsuppressionformodularmultilevelconverters[J].IEEE Transactions on Power Delivery, 2011, 26(3):2009-2017.
[12]PICAS R, POU J, CEBALLOS S, et al. Minimization of the capacitorvoltagefluctuationsofamodularmultilevelconverterbycirculatingcurrentcontrol[C]∥ProceedingsofAnnualConferenceonIEEEIn-dustrialElectronicsSociety.Montreal,Canada:IEEE,2012:4985-4991.
[13]ENGEL S P, DE DONCKER R W. Control of the modular multi-levelconverter for minimized cell capacitance[C]∥Proceeding of EuropeanConference on Power Electronics and Applications(EPE 2011). Bir-mingham, Britain:IEEE, 2011:1-10.
[14]WINKELNKEMPERM,KORNA,STEIMERP.Amodulardirectconverter for transformerless rail interties[C]∥Proceeding of Interna-tionalSymposium on IndustrialElectronics(ISIE 2010). Bari, Italy:IEEE, 2010:562-567.
[15]ILVES K,ANTONOPOULOSA,HARNEFORSL,etal.Capacitorvoltage ripple shaping in modular multilevel converters allowing foroperating region extension[C]∥Proceedings of Annual Conference onIEEE Industrial Electronics Society. Melbourne, America:IEEE, 2011:4403-4408
[16]ILVESK,ANTONOPOULOSA,NORRGAS,etal.Steady-stateanalysis of interaction between harmonic components of arm and linequantities of modular multilevel converters[J]. IEEE Transactions onIndustrial Electronics, 2012, 27(1):57-68.
[17]SONGQ,LIU W H,LIXQ.A steady-stateanalysismethod foramodularmultilevelconverter[J].IEEETransactionsonPowerElec-tronics, 2013, 28(8):3702-3713.
[18]LI X Q, LIU W H, SONG Q. Performance analysis and optimizationofcirculatingcurrentcontrolformodularmultilevelconverter[J].IEEE Transactions on Power Electronics, 2016, 63(2):716-726.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |