Journal of the Korean Institute of Intelligent Systems (한국지능시스템학회논문지)

Korean Institute of Intelligent Systems (한국지능시스템학회)
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Pitch Angle Control of Wind Turbine based on Variable PID Gains

가변적인 PID 이득에 기초한 풍력발전 시스템의 피치제어

  • Ko, Jung-Min (Department of Electronic Eng., Jeju National University) ;
  • Yang, Soo-Youg (Department of Electrical Eng., Jeju National University) ;
  • Boo, Chang-Jin (Department of Electrical Eng., Jeju National University) ;
  • Kim, Ho-Chan (Department of Electrical Eng., Jeju National University) ;
  • Huh, Jong-Chul (Faculty of Mechanical System Eng., Jeju National University) ;
  • Lee, Junghoon (Department of Computer Science and Statistics, Jeju National University) ;
  • Kang, Min-Jae (Department of Electronic Eng., Jeju National University)
  • Received : 2012.06.13
  • Accepted : 2012.12.13
  • Published : 2013.02.25
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Abstract

For regulating generator speed above the rated wind, versatile methods have been published based on PID. However, these methods with the fixed PID gains could not guarantee that the controller works well in the whole area. In this paper, variable PID gain method has been suggested to overcome this problem. The sensitivity of power to blade pitch angle changes according to wind speed. The variable PID gain function has been derived from this sensitivity.

정격풍속이상에서 발전기의 출력을 일정하게 유지하기 위하여 PID에 기초한 다양한 종류의 방법들이 발표되었다. 그러나 고정된 PID 이득을 이용한 이러한 방법에서는 전 영역에서 동작하리라는 보장이 없다. 이 논문에서는 전 영역에서 동작하는 시스템을 설계하기 위하여 풍속의 강도에 따라 PID 이득이 변하는 방법을 제안하였다. 풍속의 강도에 따라 피치각에 따른 전력의 민감도는 계속 변하는데, PID 이득을 민감도의 함수로 유도하였다.

Keywords

References

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