• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>journal of ocean engineering and marine energy >Efficient estimation of the nonlinear aerodynamic loads of floating offshore wind turbines under random waves and wind in frequency domain
【24h】

Efficient estimation of the nonlinear aerodynamic loads of floating offshore wind turbines under random waves and wind in frequency domain

机译：Efficient estimation of the nonlinear aerodynamic loads of floating offshore wind turbines under random waves and wind in frequency domain

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相关主题

摘要

This paper investigates an efficient approach to estimate nonlinear wind turbine loads of floating offshore wind turbines in the frequency domain. The international benchmark of the 5-MW NREL reference wind turbine supported by the OC3-Hywind Spar platform is chosen as a case study. The modelling of the floating offshore wind turbine subjected to random wind and wave forces is given in the frequency domain. The present formulation captures the effects of the wind turbulence acting on the platform which leads to low-frequency motions. To improve the aerodynamic load estimation, the statistical linearisation (SL) technique is used to replace the nonlinear aerodynamic functions by their equivalent linear ones, where the differences are minimised in a mean squared sense using an iterative procedure. The SL technique is compared against its equivalent nonlinear time-domain model (for benchmark) and other conventional frequency-domain models. The results demonstrate good agreement at the maximum power control region for all frequency domain-based models, whilst only SL provided accurate estimates of the response at the rated power control region. This strong agreement using SL is demonstrated in terms of probability distributions, power spectrum densities, and mean results for the displacements, collective blade pitch angle, and rotational speed of the generator. Despite its accurate estimations, the main advantage of SL is the low computational cost, which is approximately two to three orders of magnitude faster than the equivalent nonlinear time-domain simulations. Hence, SL can be a useful approach for reliable preliminary investigations, optimisation procedures, and design of the wind turbine controller.

著录项

获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号