Multiple target implementation for a doubly fed induction generator based on direct power control under unbalanced and distorted grid voltage

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• 作者：Heng Nian (1)
  Yi-peng Song (1)
  
  1. College of Electrical Engineering ; Zhejiang University ; Hangzhou ; 310027 ; China
  
• 关键词：Direct power control ; Doubly fed induction generator ; Unbalanced and distorted grid voltage ; Vector proportional and integral resonant regulator ; Parameter deviation ; TM315
• 刊名：Journal of Zhejiang University - Science C
• 出版年：2015
• 出版时间：April 2015
• 年：2015
• 卷：16
• 期：4
• 页码：321-334
• 全文大小：1,529 KB
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  3. Hu, J, He, Y, Xu, L (2009) Improved control of DFIG systems during network unbalance using PI-R current regulators. IEEE Trans. Ind. Electron. 56: pp. 439-451 CrossRef
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  15. Xu, H, Hu, J, He, Y (2012) Operation of wind-turbine-driven DFIG systems under distorted grid voltage conditions: analysis and experimental validations. IEEE Trans. Power Electron. 27: pp. 2354-2366 CrossRef
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• 刊物类别：Computer Science
• 刊物主题：Computer Science, general
  
• 出版者：Zhejiang University Press, co-published with Springer
• ISSN：1869-196X

文摘

This paper presents a multiple target implementation technique for a doubly fed induction generator (DFIG) under unbalanced and distorted grid voltage based on direct power control (DPC). Based on the mathematical model of DFIG under unbalanced and distorted voltage, the proportional and integral (PI) regulator is adopted to regulate the DFIG average active and reactive powers, while the vector PI (VPI) resonant regulator is used to achieve three alternative control targets: (1) balanced and sinusoidal stator current; (2) smooth instantaneous stator active and reactive powers; (3) smooth electromagnetic torque and instantaneous stator reactive power. The major advantage of the proposed control strategy over the conventional method is that neither negative and harmonic sequence decomposition of grid voltage nor complicated control reference calculation is required. The insensitivity of the proposed control strategy to DFIG parameter deviation is analyzed. Finally, the DFIG experimental system is developed to validate the availability of the proposed DPC strategy under unbalanced and distorted grid voltage.