Full lift blade type vertical-axis wind turbine

Abstract

The invention relates to a full-lift blade type vertical axis wind turbine, comprising: a power output shaft, a support frame fixedly connected with the power output shaft to drive the power output shaft to rotate, and a blade rotating shaft rotatably installed on the The supporting frame is mounted on and pushed to drive the blades of the output shaft to rotate; it also includes an adaptive power angle adjustment device that drives the blade rotating shaft to adjust the power angle of the blades. The invention adjusts the angle of attack of the blades in good time through the self-adaptive power angle adjustment device, and then adjusts the rotational speed and moment, thereby improving the utilization rate of wind energy.

Description

technical field [0001] The invention relates to a vertical axis wind turbine, in particular to a full-lift blade type vertical axis wind turbine, which is suitable for wind power generation and other power requirements. Background technique [0002] Most of the widely used wind energy machines such as wind turbines are of horizontal axis structure, which has the advantages of mature technology, simple structure and high efficiency, and has become the main model of commercial operation at the present stage. However, the horizontal axis wind energy machinery also has the following disadvantages: 1. The blade tip speed is high and the noise is high, so it is not suitable to be installed in a densely populated area. 2. The generator and the tower are located in the scanning area of ​​the blade, resulting in the loss of the cut-off surface. 3. The generator is placed in a higher position, which increases the cost of the bracket. 4. The moving direction of the blades is perpendi...

AI Technical Summary

Problems solved by technology

However, horizontal axis wind energy machinery also has the following disadvantages: 1. The blade tip speed is high and the noise is large, so it is not suitable for installation in densely populated areas

2. The generator and the tower are in the scanning area of ​​the blade, resulting in the loss of the cut-off surface

3. The location of the generator is higher, which increases the cost of the bracket

4. The moving direction of the blades is perpendicular to the wind direction, and the blades can only intercept wind energy at one time when they rotate once.

The above deficiencies are important factors affecting the low efficiency of vertical axis wind turbines

[0004] As a result, there have been many designs of vertical axis wind turbines that can change the angle of attack of the blades in a limited manner during operation. However, due to the small adjustment range of the angle of attack, the blades cannot be rotated at any angle; the mechanism for adjusting the angle of attack is complicated, and it takes time to adjust the power angle. Large capacity, high wear and tear, difficult production, troublesome maintenance and high operating costs have not been put into use

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