MP-MMC驱动六相永磁风力发电机建模及控制研究
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摘要
针对多相模块化多电平变流器(MP-MMC)驱动多相发电机的控制问题,基于矢量空间解耦理论,建立Y移30°六相永磁同步发电机(PMSG)在旋转坐标下的数学模型;将传统三相MMC拓扑结构推广至六相,并驱动六相永磁风力发电机。在控制上采用电流矢量解耦方法对六相永磁风力发电机的输出电流进行跟踪,同时对系统谐波成分加以抑制;对于MMC内部子模块电容电压稳定、环流抑制,采用闭环均压策略进行控制。最后通过在软件中搭建仿真模型,对发电机稳态运行以及功率突变时运行状态进行模拟,仿真结果表明:该系统具有良好的输出特性和鲁棒性能,验证了MP-MMC能够有效驱动六相永磁发电机实现平稳发电。
The mathematical model of six phase permanent magnetic synchronous generator( PMSG) with winding shifted-phase 30° was established under rotating coordinate based on the vector space decomposition theory. For the control of the multi-phase modular multilevel converter( MP-MMC) to drive the multi-phase generator,the MMC topology was extended from three phase to six phase and used to drive six phase permanent magnet wind power generator. And the current decoupling control method was adopted for base-frequency current tracing and harmonics suppressing. The close-loop control strategy was taken for the MMC internal sub-module capacitor voltage balance and the cycle current restraining. Finally,the simulation model was built under the conditions of steady state and power disturbance. The simulation results show that the system meets concerning standard and its robust performance is good. And they verify that six phase PMSG can generate electricity efficiently by MP-MMC driving.
The mathematical model of six phase permanent magnetic synchronous generator( PMSG) with winding shifted-phase 30° was established under rotating coordinate based on the vector space decomposition theory. For the control of the multi-phase modular multilevel converter( MP-MMC) to drive the multi-phase generator,the MMC topology was extended from three phase to six phase and used to drive six phase permanent magnet wind power generator. And the current decoupling control method was adopted for base-frequency current tracing and harmonics suppressing. The close-loop control strategy was taken for the MMC internal sub-module capacitor voltage balance and the cycle current restraining. Finally,the simulation model was built under the conditions of steady state and power disturbance. The simulation results show that the system meets concerning standard and its robust performance is good. And they verify that six phase PMSG can generate electricity efficiently by MP-MMC driving.
引文
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[2]王常骐,郭家虎.风电场直流并网的拓扑结构研究[J].电网技术,2014,38(11):3065.WANG Changqi,GUO Jiahu. Research on topological structures for DC grid-connection of wind farm[J]. Power System Technology,2014,38(11):3065.
[3]江道灼,谷泓杰,尹瑞,等.海上直流风电场研究现状及发展前景[J].电网技术,2015,39(9):2424.JIANG Daozhuo,GU Hongjie,YIN Rui,et al. Research status and development prospects of offshore wind farms with pure DC systems[J]. Power System Technology,2015,39(9):2424.
[4]邓孝祥,戴超凡. 5 MW中压直驱风电变流器控制系统设计[J].哈尔滨理工大学学报,2018,23(6):70.DENG Xiaoxiang,DAI Chaofan. Design of control system for 5MW medium voltage direct-driven wind power converter[J].Journal of Harbin University of Science and Technology,2018,23(6):70.
[5]高宏伟,杨贵杰,刘剑,等.三次谐波注入式五相永磁同步电机气隙磁势分析[J].电机与控制学报,2013,17(10):1.GAO Hongwei,YANG Guijie,LIU Jian,et al. Air-gap MMF analysis for five-phase PMSM with third harmonic injection[J]. Electric Machines and Control,2013,17(10):1.
[6] MEKRI F,BENELGHALI S,BENBOUZID M. Fault-tolerant control performance comparison of three-phase and five-phase PMSG for marine current turbine applications[J]. IEEE Transactions on Sustainable Energy,2013,4(2):425.
[7]姚钢,殷志柱,周荔丹,等.六相永磁同步发电机的容错控制[J].电机与控制学报,2018,22(5):2.YAO Gang,YIN Zhizhu,ZHOU Lidan,et al. Fault-tolerant control of six-phase permanent magnet synchronous generator[J]. Electric Machines and Control,2018,22(5):2.
[8] KARTTUNEN J,KALLIO S,PELTONIEMI P,et al. Dual threephase permanent magnet synchronous machine supplied by two independent voltage source inverters[C]//International Symposium on Power Electronics,Electrical Drives,Automation and Motion,June 20-22,2012,Sorrento,Italy. 2012:741-747.
[9] KARTTUNEN J,KALLIO S,PELTONIEMI P,et al. Decoupled vector control scheme for dual three-phase permanent magnet synchronous machines[J]. IEEE Transactions on Industrial Electronics,2014,61(5):2185.
[10]杨金波,杨贵杰,李铁才.双三相永磁同步电机的建模与矢量控制[J].电机与控制学报,2010,14(6):1.YANG Jinbo,YANG Guijie,LI Tiecai. Modeling and vector control for dual-three-phase PMSM[J]. Electric Machines and Control,2010,14(6):1.
[11]张平,耿攀,杨文铁,等.船舶电力推进双三相永磁同步电机电流控制策略研究[J].船电技术,2014,34(12):60.ZHANG Ping,GENG Pan,YANG Wentie,et al. The control of the current of dual three-phase permanent magnet synchronous motor for ship electric propulsion system[J]. Marine Electric&Electronic Engineering,2014,34(12):60.
[12]郭新华,陈银,尚荣艳,等.不同绕组型式双Y移30°六相永磁同步电机建模与谐波电流优化控制[J].电工技术学报,2016,31(2):56.GUO Xinhua,CHEN Yin,SHANG Rongyan,et al. Modeling and optimized harmonic current control for six-phase permanent magnet synchronous motor with two y-connected winding displaced by 30°in different types[J]. Transactions of China Electrotechnical Society,2016,31(2):56.
[13]王永兴,温旭辉,赵峰.多相永磁同步电机多维优化矢量控制[J].中国电机工程学报,2015,35(10):2534.WANG Yongxing,WEN Xuhui,ZHAO Feng. Multi-dimensional optimal vector control of multi-phase permanent magnet synchronous motor[J]. Proceedings of the CSEE,2015,35(10):2534.
[14] WANG M,HU Y,ZHAO W,et al. Application of modular multilevel converter in medium voltage high power permanent magnet synchronous generator wind energy conversion systems[J]. IET Renewable Power Generation,2016,10(6):824.
[15]常怡然,蔡旭.大型海上全直流风场中基于MMC的风力发电变流器及其控制[J].中国电机工程学报,2016,36(14):3789.CHANG Yiran,CAI Xu. MMC based wind power converters for offshore DC wind farms[J]. Proceedings of the CSEE,2016,36(14):3789.
[16] DORN J,GAMBACH H,RETZMANN D. HVDC transmission technology for sustainable power supply[C]//International Multi-Conference on Systems,Signals and Devices,March 20-23,2012,Chemnitz,Germany. 2012:1-6.
[17] DAOUD M I,MASSOUD A,ELSEROUGI A,et al. A dual three-phase induction machine based flywheel storage system driven by modular multilevel converters for fault ride through in HVDC systems[C]//Asia-Pacific Power and Energy Engineering Conference,November 15-18,2015,Brisbane,Australia.2015:1-5.
[18] ELSEROUGI A A,ABDEL-KHALIK A S,MASSOUD A M,et al. A nine-arm modular multilevel converter(9A-MMC)for sixphase medium voltage motor drives[C]//41st Annual Conference of the IEEE Industrial Electronics Society,November 9-12,2015,Yokohama,Japan. 2015:129-134.
[19]周长攀.双三相永磁同步电机驱动及容错控制技术研究[D].哈尔滨:哈尔滨工业大学,2016.
[20] ZHAO Y,LIPO T. Space vector PWM control of dual three phase induction machineusing vector space decomposition[J]. IEEE Transactions on Industry Applications,1995,31(5):1100.
[21]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.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.
[22] MA S,WANG Y,LV J,et al. Control strategy for balancing capacitor voltage of modular multilevel converter[C]//International Conference on Electrical Machines and Systems,October 22-25,2014,Hangzhou,China. 2014:2460-2464.
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