Objective Floating offshore wind power technology is a key technology to realize the large-scale development of offshore wind energy in deep and far seas. Under the strongly coupled environment of wind, wave and current, there are significant multi-body nonlinear coupling characteristics between floating platforms, wind turbines and flexible structures. This coupling characteristic further amplifies the contradictory conflict between structural safety margin and project levelized cost of energy in engineering design, and has become a core technical bottleneck restricting the commercialized and large-scale development of the floating offshore wind power industry.

Method Focusing on the theme of collaborative optimization of safety and cost, this paper conducted analysis from four aspects: mainstream platform configurations, model testing, fully coupled time-domain simulation and multidisciplinary optimization.

Result Floating offshore wind power has gradually transitioned from the demonstration verification stage to commercial demonstration, and the platform technical route has converged to scalable types. Model testing has upgraded from scale model testing to hybrid testing and mesoscale offshore in-situ testing; Fully coupled simulation tools have achieved a leap from linear simplification to nonlinear refined modeling; Multidisciplinary optimization has formed an efficient path of simulation-surrogate model-global optimization algorithm.

Conclusion In the future, it is necessary to focus on the collaborative research of platform configuration innovation, test technology upgrading, simulation accuracy improvement and multidisciplinary optimization improvement. Through multi-dimensional technology integration, the core contradiction between safety and cost will be broken, providing technical support for the efficient development of deep-sea wind energy and the sustainable development of the offshore wind power industry.