Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Properties of Pitch Control for Wind Turbine

풍력터빈의 피치 PI 제어기 특성 고찰

  • Lim, Chae-Wook (Dept. of Mechanical Engineering, Hanbat Nat'l Univ.)
  • 임채욱 (한밭대학교 기계공학과)
  • Received : 2010.06.09
  • Accepted : 2010.08.26
  • Published : 2011.01.01
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Abstract

The aerodynamic power and torque of wind turbines are extremely nonlinear. Therefore, the overall dynamic behavior of a wind turbine exhibits nonlinear characteristics that are dependent on the magnitude of the wind speed. The nonlinear aerodynamic characteristics of the wind turbine also affect the characteristics of the control system of the wind turbine. Therefore, the analysis of the nonlinear aerodynamic characteristics of wind turbine is essential in designing the wind-turbine controller. In this study, the nonlinear aerodynamic characteristics and the effects of these characteristics on the closed-loop pitch system with PI controller for an 1-mass model of the wind turbine are investigated above rated power.

블레이드와 바람의 상호작용에 의해 발생하는 풍력터빈의 공기역학적 토크와 파워의 특성은 매우 비선형적이다. 그러므로 풍력터빈의 전체 동적 거동은 풍속의 크기에 따라서 비선형적인 특성을 가진다. 공기역학적 비선형성은 또한 풍력터빈 제어시스템의 특성에 영향을 미치므로, 풍력터빈 제어기를 설계하기 위해서는 비선형적인 공기역학적 특성들에 대한 해석을 통한 고찰이 필연적이다. 본 논문에서는 정격파워 이상에서 풍속 크기에 따른 비선형적인 공기역학적 특성들과 이 비선형성들이 PI 제어기를 가지는 폐루프 피치계에 미치는 영향들을 1-질량 모델의 풍력터빈에 대하여 살펴본다.

Keywords

References

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