海上浮式风机载荷计算与动力学分析研究综述

海上浮式风机是目前最具开发潜力的新型风电技术,能为蕴藏丰富的深海风能开发提供有效的解决方案.由于浮式基础的大幅度运动、缆索的非线性大变形、叶片和塔架的大柔性及叶片承受的巨大运行风载荷,使得风浪流载荷作用下海上浮式风机系统耦合动力学分析面临着巨大的挑战.考虑到海上浮式风机特有的运动和体型特征,论述了海上浮式风机水动力学、气动力学、锚泊系统动力学和刚柔耦合动力学分析等方面的研究进展,阐明了现有载荷计算和动力学分析方法存在的局限性和可能的解决方法,指出未来应从全局系统出发研究水动力学、气动力学和结构动力学耦合问题,从而发展并形成海上浮式风机的专业分析方法与工具.

State of the art in dynamic modeling and load analysis of offshore floating wind turbines

Offshore floating wind turbine is one of the most potential technology that is capable of exploiting the abundant deepwater wind resource. Because of the existing large motion of the floating platform, the nonlinear and large deformation of the mooring line, the large flexible blades and tower, and the big wind loads applied on the blades, there are big challenges to perform dynamic analysis of the integral offshore floating wind turbine under the wind, current and wave loads. By considering the large platform motions and its special profile, the current status of aerodynamics, hydrodynamics, the dynamics of mooring line system and the rigid-flexible multibody dynamic of the offshore floating wind turbine were discussed, and the limitations and the possible solutions about the load analysis and dynamic modeling were presented. For the coupled aerodynamic, hydrodynamic, and structure dynamic behaviors of the offshore floating wind turbine, it was expected to develop specialized analysis methods and tools from the system viewpoint.