Journal of Electrical Engineering and Technology

  • 제5권3호
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  • Pages.371-378
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  • 2010
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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D-q Equivalent Circuit-based Protection Algorithm for a Doubly-fed Induction Generator in the Time Domain

  • Kang, Yong-Cheol (Dep. of Electrical Engineering, Chonbuk National University) ;
  • Kang, Hae-Gweon (Dep. of Electrical Engineering, Chonbuk National University) ;
  • Lee, Ji-Hoon (Dep. of Electrical Engineering, Chonbuk National University)
  • 투고 : 2010.02.05
  • 심사 : 2010.04.05
  • 발행 : 2010.09.01
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초록

Most modern wind turbines employ a doubly-fed induction generator (DFIG) system due to its many advantages, such as variable speed operation, relatively high efficiency, and small converter size. The DFIG system uses a wound rotor induction machine so that the magnetizing current of the generator can be fed from both the stator and the rotor. We propose a protection algorithm for a DFIG based on a d-q equivalent circuit in the time domain. In the DFIG, the voltages and currents of the rotor side and the stator side are available. The proposed algorithm estimates the instantaneous induced voltages of magnetizing inductance using those voltages and currents from both the stator and the rotor sides. If the difference between the two estimated induced voltages exceeds the threshold, the proposed algorithm detects an internal fault. The performance of the proposed algorithm is verified under various operating and fault conditions using a PSCAD/EMTDC simulator.

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참고문헌

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피인용 문헌

  1. Design and evaluation of voltage measurement-based sectoral diagnosis method for inverter open switch faults of permanent magnet synchronous motor drives vol.6, pp.8, 2012, https://doi.org/10.1049/iet-epa.2011.0315
  2. Doubly fed induction generator wind turbines: A novel integrated protection circuit for low-voltage ride-through strategy vol.6, pp.5, 2014, https://doi.org/10.1063/1.4899076