Floating type wind turbine platform with bionic fractal characteristic

Abstract

The invention discloses a floating type wind turbine platform with bionic fractal characteristics. The floating type wind turbine platform comprises a tower frame, a cabin fixedly connected with the tower frame, blades movably connected with the cabin and a Dazinglian bionic platform fixedly connected with the tower frame. The Dazinglian bionic platform comprises a floating part and a fractal structure arranged on the end face, away from the tower, of the floating part, and the shape of the outer contour of the fractal structure is the same as the shape of the floating part. According to the offshore wind turbine floating type platform, the good damping effect is achieved, the platform damping can be effectively improved, the energy dissipation rate can be effectively increased, the fatigue load can be effectively reduced, the sea wave resisting capacity is improved, the platform stability is obviously improved, material loss is reduced, meanwhile, large supporting strength can be provided, and the structural safety of the offshore wind turbine floating type platform is effectively improved.

Description

technical field [0001] The invention relates to the technical field of floating wind turbines, in particular to a floating wind turbine platform with bionic fractal characteristics. Background technique [0002] Offshore wind power systems are towering structures. Generally, the 5MW wind turbine blade hub is about 100m above the sea surface, and the blade length is about 50-60m. In order to reduce the cost of electricity, modern wind turbines are undergoing further large-scale process, and increase the wind energy capture by increasing the swept area of ​​the wind rotor. Compared with the traditional offshore oil platform, the large floating wind turbine system has a higher center of gravity, a smaller waterline surface area moment, and is more sensitive to wave excitation. There are still many problems to be explored. Therefore, effectively improving the stability is the key to ensuring the stable operation and long-term healthy service of wind turbines. [0003] At pre...

AI Technical Summary

Problems solved by technology

[0004] In the existing platform design: ①Referring to the offshore oil platform, the self-weight and engineering cost are high; ②The coupling effect of complex loads such as wind, waves, and currents on the platform system is not fully considered; ③The center of gravity of the floating wind turbine system is high and the water The line-surface area moment is small, and it is more sensitive to wave excitation, which intensifies the nonlinear motion of the platform and mooring, and will cause mooring breakage or even platform overturning in serious cases

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