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Dynamic Behavior Analysis of Floating Offshore Wind Turbine Including Flexible Effects of Tower and Blade

타워와 블레이드의 탄성효과를 고려한 부유식 해상풍력발전기의 동적거동해석

  • Jung, Hye-Young (Graduate school of Mechatronics Engineering, Pukyong Nat'l Univ.) ;
  • Sohn, Jeong-Hyun (Dept. of Mechanical & Automotive Engineering, Pukyong Nat'l Univ.)
  • 정혜영 (부경대학교 대학원 메카트로닉스공학과) ;
  • 손정현 (부경대학교 기계자동차공학과)
  • Received : 2012.02.20
  • Accepted : 2012.06.13
  • Published : 2012.08.01

Abstract

To establish a floating offshore wind turbine simulation model, a tension leg platform is added to an onshore wind turbine. The wind load is calculated by using meteorological administration data and a power law that defines the wind velocity according to the height from the sea surface. The wind load is applied to the blade and wind tower at a regular distance. The relative Morison equation is employed to generate the wave load. The rated rotor speed (18 rpm) is applied to the hub as a motion. The dynamic behavior of a 2-MW floating offshore wind turbine subjected to the wave excitation and wind load is analyzed. The flexible effects of the wind tower and the blade are analyzed. The flexible model of the wind tower and blade is established to examine the natural frequency of the TLP-type offshore wind turbine. To study the effect of the flexible tower and blade on the floating offshore wind turbine, we modeled the flexible tower model and flexible tower-blade model and compared it with a rigid model.

Keywords

Offshore Wind Turbine;Wind Load;Wave Load;Flexible Effects

Acknowledgement

Supported by : 부경대학교

References

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