Journal of Electrical Engineering and Technology

  • 제8권3호
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  • Pages.507-515
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  • 2013
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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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A 2nd Order Harmonic Compensation Method for Wind Power System Using a PR Controller

  • Jeong, Hae-Gwang (Department of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Jong-Hyun (Department of Electrical and Computer Engineering, Ajou University) ;
  • Lee, Kyo-Beum (Department of Electrical and Computer Engineering, Ajou University)
  • 투고 : 2012.07.23
  • 심사 : 2012.11.12
  • 발행 : 2013.05.01
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초록

This paper proposes a compensation method for the $2^{nd}$-order harmonic of single-phase grid-connected wind power generation systems. Theoretically, a single-phase grid-connected inverter system has no choice but to cause the $2^{nd}$-order harmonic to DC-link voltage. The reference active current is affected by the DC-link voltage. The output current from the reference active current is distorted by the $1^{st}$ and $3^{rd}$-order harmonic. The proposed method can compensate, conveniently, the reference active current with the $2^{nd}$-order harmonic. To reduce the $2^{nd}$-order ripple in the reference active current, proposed method takes a PR controller as a feed-forward compensator. PR controllers can implement selective harmonic compensation without excessive computational requirements; the use of these controllers simplifies the method. Both the simulation and experimental results agree well with the theoretical analysis.

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참고문헌

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