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Adjustable Blade Angle of Attack Double-layer Wind Wheel Vertical Axis Wind Turbine

A technology of wind power generators and vertical shafts, which is applied to wind power generators, wind power generators at right angles to the wind direction, and wind power motor combinations. Power generation efficiency, accurate airfoil profile, and smooth surface

Active Publication Date: 2018-08-07
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vertical axis wind turbines also have some disadvantages: the contradiction between the starting performance of vertical axis wind turbines and the utilization rate of wind energy; the main component of vertical axis wind turbines is the wind rotor, and the outermost blade of the wind rotor is the most complicated structure , is the main source of the instability of the overall structure; the control technology closely related to the structure of the vertical axis wind turbine is not perfect, and the related theories need to be further studied

Method used

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  • Adjustable Blade Angle of Attack Double-layer Wind Wheel Vertical Axis Wind Turbine
  • Adjustable Blade Angle of Attack Double-layer Wind Wheel Vertical Axis Wind Turbine
  • Adjustable Blade Angle of Attack Double-layer Wind Wheel Vertical Axis Wind Turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 — Figure 5 , a vertical-axis wind power generator with double-layer wind rotors with adjustable blade angle of attack, comprising a vertical-axis wind rotor (1) connected to a generator (5) and fixedly mounted on a bracket (6), characterized in that: The vertical axis wind wheel (1) is a double-layer impeller with adjustable blade angle of attack. The disc (3) and the lower disc (4), the upper disc (10) is fixedly connected with the three blades (11) of the upper wind wheel (7) through three circumferentially evenly distributed upper spokes (9) The upper end is hinged; the middle disc (3) is fixedly connected to the lower end of the blade (11) of the upper wind wheel (7) and the lower wind wheel ( The upper ends of the three blades (11') of 7') are hinged, so that the adjacent blades of the upper and lower layers are distributed at an angle of 60°; the lower disc (4) is fixedly connected by three lower spokes (9" ) are hinged to the lower ends of the th...

Embodiment 2

[0030] see figure 1 , this embodiment is basically the same as Embodiment 1, and the special features are as follows: the generator (5) is a permanent magnet generator, and the generator (5) is fixed to an upper bracket disc ( 17), and the upward extension of the rotating shaft of the generator (5) is fixedly connected with the lower disc (4).

Embodiment 3

[0032] see figure 1 , this embodiment is basically the same as Embodiment 1, and the special features are as follows: the blade (11, 11') airfoil is NACA4412,

[0033] Made of PLA material through 3D printing, the airfoil shape is accurate, and the blades (11, 11') are light in weight, high in strength and smooth in surface. The spokes (9, 9', 9") connecting the blades are made of carbon fiber material. The carbon fiber spokes (9, 9', 9") have high strength, small deformation, good fatigue resistance, good corrosion resistance, and light weight. Carbon fiber spokes (9, 9', 9") increase wind turbine efficiency.

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Abstract

The invention discloses an adjustable-blade-attack-angle vertical-axis wind turbine with double-layer wind wheels. According to the adjustable-blade-attack-angle vertical-axis wind turbine, one vertical axis wind wheel is connected with a generator to be fixedly installed on a support, and the adjustable-blade-attack-angle vertical-axis wind turbine is characterized in that vertical-axis wind wheels are the adjustable-blade-attack-angle double-layer wind wheels. According to the structure of the adjustable-blade-attack-angle vertical-axis wind turbine, an upper disc, a middle disc and a lower disc are fixed to the upper part, the middle part and the lower part of a center cylinder respectively, and blade attack angle adjusting devices are installed on the upper disc and the middle disc respectively and are in linkage with upper and lower layer wind wheel blades respectively to adjust the attack angle of the blades. Wind energy is used for generating power, staring torque is small, the environmental adaptability is good, and power generation efficiency is high. The adjustable-blade-attack-angle vertical-axis wind turbine can be widely carried on a polar mobile robot to guarantee the cruising ability of the robot or is used for supplying power to electric appliances in families at remote regions.

Description

technical field [0001] The invention relates to a double-layer wind wheel vertical axis wind power generator with an adjustable blade angle of attack, which is a vertical axis wind power generator that can be used in a polar environment to drive a polar scientific research robot by means of wind power generation. Background technique [0002] Most of the robots currently used in Antarctica are powered by batteries or fuel engines, and their range of motion is very limited. Antarctica is rich in wind resources. If wind energy is used as an energy source, the robot's activities will no longer be restricted by energy factors, and the range and time of activities can be greatly expanded. In this way, the "unlimited" endurance roaming of the robot in the ice sheet can be realized. To achieve infinite roaming for polar scientific research robots, the vertical axis wind power generation system should be suitable for the robot's wind power drive. [0003] A wind turbine is an energ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D3/02F03D3/06F03D7/06F03D9/25F03D13/20
CPCY02B10/30Y02E10/728Y02E10/74
Inventor 谢少荣程启兴吴翔胡辛明刘崇锋罗均
Owner SHANGHAI UNIV