Wind and Structures

  • 제18권3호
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  • Pages.253-265
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  • 2014
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  • 1226-6116(pISSN)
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  • 1598-6225(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Optimal design of floating substructures for spar-type wind turbine systems

  • Choi, Ejae (School of Mechanical Engineering, Pusan National University) ;
  • Han, Changwan (School of Mechanical Engineering, Pusan National University) ;
  • Kim, Hanjong (School of Mechanical Engineering, Pusan National University) ;
  • Park, Seonghun (School of Mechanical Engineering, Pusan National University)
  • 투고 : 2012.07.31
  • 심사 : 2013.11.06
  • 발행 : 2014.03.25
⟨ 이전 논문 다음 논문 ⟩

초록

The platform and floating structure of spar type offshore wind turbine systems should be designed in order for the 6-DOF motions to be minimized, considering diverse loading environments such as the ocean wave, wind, and current conditions. The objective of this study is to optimally design the platform and substructure of a 3MW spar type wind turbine system with the maximum postural stability in 6-DOF motions as well as the minimum material cost. Therefore, design variables of the platform and substructure were first determined and then optimized by a hydrodynamic analysis. For the hydrodynamic analysis, the body weight of the system was considered, and the ocean wave conditions were quantified to the wave forces using the Morison's equation. Moreover, the minimal number of computation analysis models was generated by the Design of Experiments (DOE), and the design variables of the platform and substructure were finally optimized by using a genetic algorithm with a neural network approximation.

키워드

과제정보

연구 과제 주관 기관 : KETEP, NRF

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피인용 문헌

  1. Dynamic reliability analysis of offshore wind turbine support structure under earthquake vol.21, pp.6, 2015, https://doi.org/10.12989/was.2015.21.6.609
  2. Parallel Analysis of Offshore Wind Turbine Structures under Ultimate Loads vol.9, pp.21, 2014, https://doi.org/10.3390/app9214708
  3. Structural Modeling and Failure Assessment of Spar-Type Substructure for 5 MW Floating Offshore Wind Turbine under Extreme Conditions in the East Sea vol.14, pp.20, 2014, https://doi.org/10.3390/en14206571