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Cross-brace device for large vertical axis wind turbine

A vertical axis, wind turbine technology, applied in the control of wind turbines, wind turbines at right angles to the wind direction, wind turbines, etc., can solve the problems of poor self-starting performance of vertical axis fans Influence and adjust the effect of wind turbine speed

Pending Publication Date: 2019-08-30
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor self-starting performance of vertical axis fans at low wind speeds and speed control at high wind speeds, the present invention provides a cross brace device for large vertical axis fans

Method used

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  • Cross-brace device for large vertical axis wind turbine
  • Cross-brace device for large vertical axis wind turbine
  • Cross-brace device for large vertical axis wind turbine

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] figure 1 , 5 A structural diagram of a cross bracing device for a large vertical axis wind turbine is shown. In this cross brace device for a large vertical axis wind turbine, the wind turbine blades 8 are connected to the rotating shaft 9 through a streamlined fixed cross brace 1 . The fixed cross brace 1 is provided with a streamlined movable cross brace 2 , a connecting shaft 3 and a driving mechanism, and the fixed cross brace 1 is connected to the movable cross brace 2 through the connecting shaft 3 . The driving mechanism includes a servo motor 4, a lead screw 5 and a screw nut 6 matched with the lead screw 5. One end of the transmission link 7 is connected to the movable cross brace 2 through the first hinge 7a, and the other end is connected to the screw nut 6 through the second hinge 7b. , the servo motor 4 drives the lead screw 5 to rotate, and the screw nut 6 moving on the lead screw 5 makes the movable cross brace 2 expand or close around the connecting sh...

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PUM

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Abstract

The invention discloses a cross-brace device for a large vertical axis wind turbine, and belongs to the field of wind power generation. The cross-brace device comprises a fixed cross-brace, a movablecross-brace, a connecting shaft and a driving mechanism; and the fixed cross-brace is connected with the movable cross-brace through the connecting shaft. The cross-brace device has the functions of connecting blades, improving self-starting performance and reducing rotating speed. The movable cross-brace is arranged on the cross-brace structure, the air resistance is changed by changing the windward area of a cross-brace, and then a starting moment of a vertical axis fan is increased under the static state of low wind speed while the rotating speed is reduced under the condition of high windspeed, so that the functions of improving self-starting performance and adjusting the rotating speed of the wind turbine are achieved; and the cross-brace device can solve the problems of inherent poor aerodynamic performance and rotating speed control of the vertical axis fan, and can reduce the impact of additional equipment on the overall structure and aerodynamic performance of the vertical axis fan to the greatest extent at the same time.

Description

technical field [0001] The invention relates to a horizontal bracing device for a large vertical axis wind turbine, which belongs to the field of wind power generation. [0002] technical background [0003] As a non-polluting, widely distributed, and time-independent renewable energy, wind energy has been widely valued by all countries. The development and utilization of wind energy resources mainly convert wind energy into electrical energy through wind turbines. At present, the main types of wind turbines used include horizontal-axis fans and vertical-axis fans. Among them, horizontal-axis fans have a long history of development and mature technologies. Compared with traditional horizontal axis wind turbines, vertical axis wind turbines can capture wind energy from all directions without the need for yaw facing wind devices. At the same time, the power generation system of the vertical axis fan can be arranged on the ground, which is convenient for maintenance. In additi...

Claims

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Application Information

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IPC IPC(8): F03D3/06F03D7/06
CPCF03D3/062F03D7/06F05B2270/32Y02E10/74
Inventor 姜宜辰李嘉文赵培栋
Owner DALIAN UNIV OF TECH