期刊文献+

基于电流控制电压源的并联三相变流器环流抑制控制方法

Circulation Current Suppressing for Parallel Three-phase Inverters Based on CCVS
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摘要 三相变流器并联运行能提高系统可靠性和传输容量,然而并联结构为环流提供了流通路径,可能导致供电质量降低,运行损耗增加,为此必须采取措施抑制环流。本文以变流器作为电流控制电压源,通过增加环路等值阻抗的方法抑制环流。经分析可知,变流器输出电压不对称及线路参数不对称引起的零序环流和谐波环流流经相同的路径,采集并联变流器系统环流,经转移阻抗计算得到输出电压,并与正常运行时的控制系统输出电压叠加,环流回路相当于增加了该转移阻抗。仿真结果表明,采用该方法且转移阻抗选择纯电阻时,零序环流和谐波环流均能进行有效抑制。 Parallel three-phase inverters can improve operation reliability and increase transmission capacity,while the parallel structure provides path for circulating current,which worsen the power quality and increase energy losses.So it is necessary to suppress such circulating current.By transferring inverters into current-controlled voltage sources(CCVS),the circulating current is suppressed through adding equivalent impedance in the circulating path in this paper.It can be seen from analysis that the zero-sequence circulating current and harmonic circulating current that are caused by the unbalance of voltage output of inverter and line parameters flow through same path.Through multiplying detected circulating current of parallel inverter system and transfer impedance,the output voltage can be obtained.When it is added to the output voltage of control system in normal conditions,the circulating path is equivalent to add this transfer impedance.Analysis and simulation results show that both zero-sequence and harmonic circulating current can be effectively suppressed when a pure resistance is chosen as the transfer impedance by using proposed method.
出处 《现代电力》 北大核心 2016年第1期27-33,共7页 Modern Electric Power
关键词 三相变流器 并联结构 环流抑制 电流控制电压源 three-phase inverters parallel structure circulating current suppressing CCVS
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参考文献15

  • 1Lasseter R, Akhil A, Marnay C, et al. Integration of Distributed Energy Resources. The CERTS Micro- grid Concept [R-]. 2002.
  • 2Guerrero J M, Vicuna L G, Matas J, et ai. Wireless control strategy or parallel operation of distributed generation inverters I-J~. IEEE Transaction on In- dustrial Electronics, 2006, 53(5)~ 1461-1470.
  • 3Augustine S, Mishra M K, Lakshminarasamma N." Adaptive Droop Control Strategy for Load Sharing and Circulating Current Minimization in Low-Voltage Standalone IX; Microgrid [-JJ. IEEE Transactions on Sustainable Energy, 2015, 6(1) : 132- 142.
  • 4Moon Ji-Woo, Kim Chun-Sung, Park Jung-Woo. Circulating Current Control in MMC Under the Un- balanced Voltage [-J~. IEEE Transactions on Power Delivery, 2013, 28(3).. 1952-1959.
  • 5Wei Yao, Min Chen, Matas J, et al. Design and A- nalysis of the Droop Control Method for Parallel In- verters Considering the Impact of the Complex Im- pedance on the Power Sharing ]-J~. IEEE Transac- tions on Industrial Electronics, 2011, 58 (2)~ 576 -588.
  • 6Liao Yi-Hung, Ke Yu-Lung, Chen Hung-Chi, et al. A Novel Control Strategy of Circulating Currents in Paralleled Single-Phase Boost Converters for Micro- Grid Applications [-C-]//2013 IEEE/IAS 49th Indus-trial ~ Commercial Power Systems Technical Confer- ence, 2013.
  • 7张宇,段善旭,康勇,陈坚.逆变器并联系统中谐波环流抑制的研究[J].中国电机工程学报,2006,26(12):67-72. 被引量:42
  • 8ZHANG Xing SHAO Zhangping WANG Fusheng LIU Ping REN Kangle.Zero-sequence Circulating Current Reduction for Three-phase Three-level Modular Photovoltaic Grid-connected Systems[J].中国电机工程学报,2013,33(9). 被引量:16
  • 9Pan Ching-Tsai, Liao Yi-Hung. Modeling and Con- trol of Circulating Currents for, Parallel Three-Phase Boost Rectifiers With Different Load Sharing [J]. IEEE Transactions on Industrial Electronics, 2008, 55(7) : 2776 - 2785.
  • 10Zhang Xueguang, Chen Jiaming, Ma Yan, et al. Bandwidth Expansion Method for Circulating Current Control in Parallel Three-phase PWM Converter Con- necting System ~J~. IEEE Transactions on Electron- ics, 2014, 29(12) .. 6847 - 6856.

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