Double-wind-wheel offshore floating type wind turbine generator

A technology of wind turbines and double wind rotors, which is applied to the combination of wind motors, wind engines consistent with the wind direction, and wind power generation. It can solve problems that cannot be eliminated, affect the comprehensive utilization of wind farm energy, and wind turbines overturn

Inactive Publication Date: 2021-04-23
HUANENG CLEAN ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the foundation of floating wind turbines is inherently unstable, and the wind turbines are always shaking and swaying to a certain extent at sea. The force action will also have a tendency to rotate horizontally around the tower, which cannot be eliminated, which will aggravate the overload of the basic structure of the floating wind turbine, and will cause the wind turbine to overturn in severe cases
[0004] The single wind turbine wind turbine is limited by the Bates limit, the theoretical maximum wind energy utilization coefficient is 0.593, and it is difficult to break through 0.5 in actual engineering, especially...

Method used

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  • Double-wind-wheel offshore floating type wind turbine generator
  • Double-wind-wheel offshore floating type wind turbine generator
  • Double-wind-wheel offshore floating type wind turbine generator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 , the offshore floating wind turbine with double wind rotors of the present invention comprises a front rotor 1, a rear rotor 2, a rear hub 3, a nacelle 4, a front hub 5, a tower 6, a transition section 7, a floating body 8, and an anchor bracket 9 , catenary 10 and anchoring device 11. The front wind wheel 1 and the rear wind wheel 2 each have 3 blades, the diameter of the front wind wheel 1 is 150 meters, and the diameter of the rear wind wheel 2 is 80 meters; Using flange connection. The front hub 5 and the rear hub 3 are at the two ends of the nacelle 4 respectively. There are two high-speed transmission chains inside the nacelle 4, and the high-speed transmission chains are respectively connected to the output ends of the two front wind wheels 1 and the rear wind wheels 2. The high-speed transmission chain includes a low-speed shaft, a high-speed gearbox group, a high-speed shaft and a generator connected in sequence along the transmission squar...

Embodiment 2

[0051] Such as figure 2 , the offshore floating wind turbine with double wind rotors of the present invention comprises a front rotor 1, a rear rotor 2, a rear hub 3, a nacelle 4, a front hub 5, a tower 6, a floating body 8, a catenary 10, and an anchoring device 11 and the floating body connection support 12. The front wind wheel 1 and the rear wind wheel 2 each have 3 blades. The front wind wheel 1 has a diameter of 150 meters, and the rear wind wheel 2 has a diameter of 150 meters. The front wind wheel 1 and the front wheel hub 5, the rear wind wheel 2 and the rear wheel hub 3 are connected by flanges. The front hub 5 and the rear hub 3 are at the two ends of the nacelle 4 respectively. There are two medium-speed transmission chains inside the nacelle, and the medium-speed transmission chains are connected to the two front wind wheels 1 and the rear wind wheels 2 respectively. The medium-speed transmission chain includes a low-speed shaft, a medium-speed gearbox group,...

Embodiment 3

[0053] Such as image 3 , the offshore floating wind turbine with double wind rotors of the present invention comprises a front rotor 1, a rear rotor 2, a rear hub 3, a nacelle 4, a front hub 5, a tower 6, a floating body 8, a catenary 10 and an anchoring device 11; The front wind wheel 1 and the rear wind wheel 2 each have 3 blades. The front wind wheel 1 has a diameter of 50 meters, and the rear wind wheel 2 has a diameter of 120 meters. The front wind wheel 1 and the front wheel hub 5, the rear wind wheel 2 and the rear wheel hub 3 are connected by flanges. The front hub 5 and the rear hub 3 are at the two ends of the nacelle 4 respectively. There are two low-speed transmission chains inside the nacelle, and the low-speed transmission chains are connected to the two front wind wheels 1 and the rear wind wheels 2 respectively. The low-speed transmission chain includes low-speed shafts and generators connected in sequence along the transmission direction. The electric ene...

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Abstract

The invention discloses a double-wind-wheel offshore floating type wind turbine generator. The double-wind-wheel offshore floating type wind turbine generator comprises a front wind wheel, a rear wind wheel, a rear hub, a cabin, a front hub, a tower drum, a floating body, a catenary and an anchoring device, wherein the front wind wheel is arranged in the upwind direction, the rear wind wheel is arranged in the downwind direction, the front wind wheel and the rear wind wheel are connected to the two ends of the cabin through the hubs, and the cabin, the tower drum and the floating body are sequentially connected from top to bottom; a yawing system is arranged at a flange plate between the cabin and the tower drum; blades of the front wind wheel and blades of the rear wind wheel are respectively connected to the front hub and the rear hub through flange plates; a variable pitch system is arranged at the flange plate, connected to the front hub, of each blade of the front wind wheel; a variable pitch system is arranged at the flange plate, connected to the rear hub, of each blade of the rear wind wheel; and the rear wind wheel can fully capture remaining wind energy of the front wind wheel, gradient utilization of the wind energy is achieved, the comprehensive wind energy utilization coefficient of the wind turbine generator is increased, wake flow effects are reduced, and the sea area utilization rate and the whole power generation efficiency of an offshore wind plant are improved.

Description

technical field [0001] The invention belongs to the technical field of offshore wind power, and in particular relates to an offshore floating wind turbine with double wind wheels. Background technique [0002] Offshore floating wind turbines are suitable for areas with large water depths. Compared with wind turbines with transmission and fixed foundations, they have the advantages of lower manufacturing and installation costs, and are an important way to develop deep-sea wind energy resources in the future. [0003] However, the foundation of floating wind turbines is inherently unstable, and the wind turbines are always shaking and swaying to a certain extent at sea. The force action will also have a tendency to rotate horizontally around the tower, which cannot be eliminated, which will aggravate the overload of the basic structure of the floating wind turbine, and will cause the wind turbine to overturn in severe cases. [0004] The single wind turbine wind turbine is li...

Claims

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Application Information

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IPC IPC(8): F03D1/02F03D1/06F03D13/25F03D7/02F03D9/25F03D80/00B63B35/44
CPCF03D1/025F03D13/25F03D7/0224F03D9/25F03D80/00B63B35/44B63B2035/446F03D1/0658Y02E10/72Y02E10/727
Inventor 郭小江唐巍李新凯叶昭良劳文欣
Owner HUANENG CLEAN ENERGY RES INST
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