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Journal of power electronics : JPE v.8 no.1, 2008년, pp.10 - 22   피인용횟수: 4

New Control Scheme for the Wind-Driven Doubly Fed Induction Generator under Normal and Abnormal Grid Voltage Conditions

Ebrahim, Osama S.   (Energy and Power Electronics Applied Research Lab (ePEARL), Queen's University  ); Jain, Praveen K.   (Energy and Power Electronics Applied Research Lab (ePEARL), Queen's University  ); Nishith, Goel   (Cistel Technology  );
  • 초록

    The wind-driven doubly fed induction generator (DFIG) is currently under pressure to be more grid-compatible. The main concern is the fault ride-through (FRT) requirement to keep the generator connected to the grid during faults. In response to this, the paper introduces a novel model and new control scheme for the DFIG. The model provides a means of direct stator power control and considers the stator transients. On the basis of the derived model, a robust linear quadratic (LQ) controller is synthesized. The control law has proportional and integral actions and takes account of one sample delay in the input owing to the microprocessor's execution time. Further, the influence of the grid voltage imperfection is mitigated using frequency shaped cost functional method. Compensation of the rotor current pulsations is proposed to improve the FRT capability as well as the generator performance under grid voltage unbalance. As a consequence, the control system can achieve i) fast direct power control without instability risk, ii) alleviation of the problems associated with the DFIG operation under unbalanced grid voltage, and iii) high probability of successful grid FRT. The effectiveness of the proposed solution is confirmed through simulation studies on 2MW DFIG.


  • 주제어

    doubly fed induction generator .   direct power control .   linear quadratic regulator .   frequency shaped cost function .   fault ride-through .   grid voltage unbalance .   wind energy.  

  • 참고문헌 (25)

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  • 이 논문을 인용한 문헌 (4)

    1. 2009. "" Journal of power electronics : JPE, 9(1): 109~116     
    2. 2009. "" Journal of power electronics : JPE, 9(2): 288~299     
    3. 2009. "" Journal of power electronics : JPE, 9(5): 781~790     
    4. Han, Dae-Su ; Suh, Yong-Sug 2015. "Control Strategy of Improved Transient Response for a Doubly Fed Induction Generator in Medium Voltage Wind Power System under Grid Unbalance" 전력전자학회 논문지 = The Transactions of the Korean Institute of Power Electronics, 20(1): 91~103     

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