Parent–nested optimizing structure for vibration reduction of floating wind turbine structures
- Title
- Parent–nested optimizing structure for vibration reduction of floating wind turbine structures
- Author
- 오기용
- Keywords
- parent nested optimizing structure; optimization; local minima; global minimum; floating wind turbines; tuned mass damper
- Issue Date
- 2020-11
- Publisher
- MDPI
- Citation
- JOURNAL OF MARINE SCIENCE AND ENGINEERING, v. 8, no. 11, article no. 876
- Abstract
- A tuned mass damper (TMD) is a system that effectively reduces the vibrations of floating offshore wind turbines (FOWTs). To maximize the performance of TMDs, it is necessary to optimize their design parameters (i.e., stiffness, damping, and installation location). However, this optimization process is challenging because of the existence of multiple local minima. Although various methods have been proposed to determine the global minimum (e.g., exhaustive search, genetic algorithms, and artificial fish swarm algorithms), they are computationally intensive. To address this issue, a novel optimization approach based on a parent nested optimizing structure and approximative search is proposed in this paper. The approximative search determines an initial parameter set (close to the optimal set) with fewer calculations. Then, the global minimum can be rapidly determined using the nested and parent optimizers. The effectiveness of this approach was verified with an FOWT exposed to stochastic winds. The results show that this approach is 30–55 times faster than a conventional global optimization method.
- URI
- https://www.mdpi.com/2077-1312/8/11/876https://repository.hanyang.ac.kr/handle/20.500.11754/172642
- ISSN
- 2077-1312
- DOI
- 10.3390/jmse8110876
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
- Files in This Item:
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