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Speed-adjustable vertical shaft wind driven generator of wind wheel blade

A wind power generator, vertical axis technology, applied in the direction of wind power generators at right angles to the wind direction, wind power motors, control of wind power motors, etc., can solve problems such as blade stall

Inactive Publication Date: 2012-09-19
李杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the current problem of stalling of the vertical axis wind turbine blades, enables the wind turbine to work in a wide range of wind speeds, and can still maintain a stable power output in the high wind speed section

Method used

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  • Speed-adjustable vertical shaft wind driven generator of wind wheel blade
  • Speed-adjustable vertical shaft wind driven generator of wind wheel blade
  • Speed-adjustable vertical shaft wind driven generator of wind wheel blade

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Embodiment Construction

[0011] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention, and are not enough to limit the protection scope of the present invention.

[0012] refer to figure 1 Shown: the present invention relates to a vertical axis wind power generator, comprising a main shaft 1 perpendicular to the ground, a power generating device 5 installed under the main shaft 1, upper and lower hubs 4 connected to the main shaft 1, three wing-like structures Lifting blades 2, the three lifting blades 2 are equidistantly distributed around the main shaft 1 through connecting rods 3; each lifting blade 2 corresponds to the upper and lower two groups of connecting rods 3, and each group of connecting rods 3 is two, which are respectively connected The lifting blade 2 and the hub 4, the two connections 3 of each group are sprea...

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PUM

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Abstract

The invention relates to a vertical shaft wind driven generator. Currently, a blade stall of the vertical shaft wind driven generator does not have a better control method and the stall of a blade only can be controlled by an electromagnetic brake and a manual brake of the generator, so that the volume and the cost of the generator are increased and the extreme loss of power output under a stall state is caused. According to the invention, an air speed of the blade is adjusted through a manner of changing an attacking angle of the blade. The vertical shaft wind driven generator utilizes a simple speed regulating device to control the swinging of the blade, so that the stall of the blade is eliminated by changing the attacking angle of the blade. The vertical shaft wind driven generator does not need an extra controller and has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to a wind power generator, in particular to an off-grid vertical axis wind power generator. Background technique [0002] Wind engines are currently divided into vertical and horizontal engines; compared with horizontal axis wind turbines, vertical wind turbines are small in size, easy to install, low in starting wind speed, and strong in adaptability to changes in wind direction. High efficiency, quiet, low maintenance costs and other advantages, has been widely developed and utilized. Whether it is a drag-type or a lift-type vertical axis wind turbine, the rotor blades are fixed. After the rated wind speed is exceeded, due to the limitations of mechanical strength and physical performance of the generator and power electronics capacity, the energy capture of the wind rotor must be reduced. , so that the power output remains near the rated value. This also limits the load on the blades and the impact received by the entire wind...

Claims

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Application Information

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IPC IPC(8): F03D7/06F03D3/06
CPCY02E10/74
Inventor 李杰
Owner 李杰