Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Design and Performance Evaluation of a 10kW Scale Counter-Rotating Wind Turbine Rotor

10kW급 상반전 풍력터빈 로터의 설계와 성능 평가에 관한 연구

  • Hoang, Anh Dung (Graduate School, Mokpo National Maritime University) ;
  • Yang, Chang-Jo (Department of Marine System Engineering, Mokpo National Maritime University)
  • 황안둥 (목포해양대학교 대학원) ;
  • 양창조 (목포해양대학교 기관시스템공학과)
  • Received : 2013.11.06
  • Accepted : 2014.02.25
  • Published : 2014.04.28
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Abstract

The counter-rotating approach on wind turbine has been recently put in interest for its certain advantages in both design and performance. This paper introduces a study on a counter-rotating wind turbine designed and modeled using NREL airfoils S822 and S823. The aims of the study is to evaluate and discover the performance of the counter-rotating system, and compares to that of single rotor turbine of same design using numerical simulation. The results show higher performance of the counter-rotating system compared with single rotor case at TSR 3 to 5 but lower performance at higher TSR. This is due to the interaction between upstream and downstream rotors. Thus, the counter-rotating turbine is more efficient at low rotor rotational speed.

상반전 풍력터빈은 설계와 성능 관점에서 최근 각광을 받기 시작하고 있다. 본 논문은 NREL S822, S823을 이용하여 설계 및 모델링한 상반전 풍력터빈에 대해 연구를 수행하였다. 본 논문은 수치해석 기법을 통하여 단일 풍력터빈과 상반전 풍력터빈을 각각 설계하고, 그 성능을 다양한 조건에서 비교하고자 하였다. 그 결과 상반전 풍력터빈은 단일 풍력 터빈에 비해 TSR 3~5 영역에서 보다 높은 성능계수를 나타냈으며, 그 보다 더 높은 TSR 영역에서는 낮은 성능계수를 나타내었다. 이것은 로터 상 하류의 간섭의 간섭 때문이며, 또한 본 연구에서는 낮은 영역의 TSR에서 운전되는 상반전 풍력터빈의 유효성을 함께 보였다.

Keywords

References

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