Ultimate load design of jacket-type offshore wind turbines under tropical cyclones

Shen-Haw Ju, Feng Chien Su, Yao Ting Jiang, Yu Chuan Chiu

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Tropical cyclones are a high risk to offshore wind turbine (OWT) support structures, so the design conditions, including this risk, are necessary for tropical cyclone frequent occurrence zones. This study developed a computer program to carry out a critical ultimate load analysis and determine the optimum design for a Jacket-type OWT support structure. The total weight of the OWT support structure after the optimal steel design with the yaw operative condition is always considerably smaller than that without for the steel design results under the loads of the GL Tropical Cyclone Technical Note (GL TCTN). This paper studies OWTs under the tropical cyclone classes 1 to 3 and the terrain categories A, to C, where the 1-minute wind speed at 10-m height is gradually increased from classes 1 to 3, and the surface roughness decreases from A to C. When the yaw can operate, the total steel weight consumption due to the tropical cyclone 1C, 1B, and 2C loads is lower than that for the IEC 61400-3 loads. In the case of 1A, the overall steel consumption is only slightly higher than that of the IEC 61400-3. However, for other conditions, the design should include the GL TCTN loads. For the yaw inoperative condition, the GL TCTN results are always largely dominant in the steel design, so the use of only the IEC 61400-3 condition will result in extremely high risk to OWT support structures.

Original languageEnglish
Pages (from-to)685-697
Number of pages13
JournalWind Energy
Volume22
Issue number5
DOIs
Publication statusPublished - 2019 May 1

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Offshore wind turbines
Steel
Computer program listings
Surface roughness

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment

Cite this

Ju, Shen-Haw ; Su, Feng Chien ; Jiang, Yao Ting ; Chiu, Yu Chuan. / Ultimate load design of jacket-type offshore wind turbines under tropical cyclones. In: Wind Energy. 2019 ; Vol. 22, No. 5. pp. 685-697.
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Ultimate load design of jacket-type offshore wind turbines under tropical cyclones. / Ju, Shen-Haw; Su, Feng Chien; Jiang, Yao Ting; Chiu, Yu Chuan.

In: Wind Energy, Vol. 22, No. 5, 01.05.2019, p. 685-697.

Research output: Contribution to journalArticle

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