Virtual Complex Impedance Power Distribution Method for Micro-Source Inverter Based on Coordinate Transformation

被引：0
|
作者：
Zhang B. [1 ]
Li D. [1 ]
Yan X. [1 ]
Huang Y. [2 ]
Wang D. [1 ]
机构：
[1] Key Laboratory of Distributed Energy Storage and Micro-Grid of Hebei Province, North China Electric Power University, Baoding
[2] State Grid Hebei Electric Power Corporation, Shijiazhuang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2019年 / 34卷
关键词：
Coordinate conversion; Parallel inverter; Power decoupling; Power distribution; Virtual complex impedance;
D O I：
10.19595/j.cnki.1000-6753.tces.L80278
中图分类号：
学科分类号：
摘要：
The impedance characteristics of the line in microgrid are closely related to the power decoupling control of micro sources inverter, circulation suppression, power quality and so on. Traditional virtual impedance control can easily cause voltage drop of common connection point, control robustness difference, and the deficiency of system instability caused by line resistance drift, a virtual complex impedance power sharing method for micro sources inverter based on coordinate transformation is proposed, the power output of parallel micro sources inverter is decoupled precisely and the equivalent line impedance is matched by virtual complex impedance control loop, the load power is effectively distributed according to the capacity ratio of the micro sources inverter. Simulation and experimental results verify the proposed method. © 2019, Electrical Technology Press Co. Ltd. All right reserved.
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页码：212 / 223
页数：11
相关论文
共 24 条
  • [1] Mohd A., Ortjohann E., Morton D., Et al., Review of control techniques for inverters parallel operation, Electric Power Systems Research, 80, 12, pp. 1477-1487, (2010)
  • [2] Sun X., Tian Y., Chen Z., Adaptive decoupled power control method for inverter connected DG, Renewable Power Generation, 8, 2, pp. 171-182, (2014)
  • [3] Fang H., Tao Y., Xiao Z., Et al., Robust control and circulating current analysis for grid-connected parallel inverters, Transactions of China Electrotechnical Society, 32, 18, pp. 248-258, (2017)
  • [4] Rocabert J., Luna A., Blaabjerg F., Et al., Control of power converters in AC microgrids, IEEE Transactions on Power Electronics, 27, 11, pp. 4734-4749, (2012)
  • [5] Zhou X., Rong F., Lu Z., Et al., A coordinate rotational transformation based virtual power V/f droop control method for low voltage microgrid, Automation of Electric Power Systems, 36, 2, pp. 47-51, (2012)
  • [6] Li P., Dong Y., Duan K., Et al., Simulation study for control strategy of bi-directional AC/DC converter parallel system in DC microgrid, Power System Protection and Control, 45, 17, pp. 43-50, (2017)
  • [7] Zhao Z., Yang P., Deng C., Et al., Review on dynamic stability research of microgrid, Transactions of China Electrotechnical Society, 32, 10, pp. 111-122, (2017)
  • [8] Ma H., Lin Z., Lin L., Flexible power distribution for three-phase parallel inverters based on multi-agent systems, Transactions of China Electrotechnical Society, 32, 2, pp. 216-227, (2017)
  • [9] Guerrero J.M., Hang L., Uceda J., Control of distri-buted uninterruptible power supply systems, IEEE Transactions on Industrial Electronics, 55, 8, pp. 2845-2859, (2008)
  • [10] Chen L., Wang Z., Research of operation control of micro-grid based on improved droop control, Power System Protection and Control, 44, 4, pp. 16-21, (2016)
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