High-efficiency and large-power vertical axis wind power generator

Abstract

A high-efficiency and high-power vertical axis wind turbine provided by the present invention includes a rotor with vertical blades as well as a booster airfoil, the said booster airfoil is a wind shielding object which is provided on a support in a manner without blocking the rotation of the said blade and in the front of the windward side of the said wind rotor, the wind shielding surface of the said booster airfoil corresponds with the windward blades of the said wind rotor on the side where rotation is hindered by the incoming wind streams, so that the side where rotation of the rotor is hindered by the incoming wind streams is shielded, and the said support is placed on a fixed frame. The provision of a booster airfoil in front of the windward side of the rotor helps block the moment of resistance produced by the air stream on the rotor of the wind turbine, adding to the moment of rotation of the rotor, improving the efficiency of the wind turbine possibly by 25% or more.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, and provides a wind power generator, especially a high-efficiency and high-power vertical axis wind power generator. Background technique [0002] Wind energy is the most promising renewable energy besides water energy, and has been highly valued by countries all over the world. China has become the most active wind power market in the world. In 2009, the installed capacity of new wind power in the country exceeded 8 million kilowatts, and the cumulative total capacity has reached more than 20 million kilowatts. Therefore, the market prospect of my country's wind power equipment manufacturing industry and related fields is very broad. [0003] Wind turbines are classified according to the direction of the rotation axis, which can be divided into two types: horizontal axis and vertical axis. [0004] In the prior art, the vertical-axis wind power generators are showing more and mo...

AI Technical Summary

Problems solved by technology

This method of eliminating wind resistance by introducing natural wind into the guide channel and then pushing the blades of the wind rotor has the disadvantage of reducing the force of the natural wind. At the same time, the direction of the natural wind will change frequently. If the guide device does not change with the wind direction The wind energy loss caused by the flow guide device will be greater. If the design of the flow guide device can change the flow guide direction with the change of the wind direction, the structure of the flow guide device will inevitably become complicated. Inconvenient to use, manage and maintain in certain harsh environments

[0006] Most of the wind rotor blades of existing wind turbines are in the shape of a triangle with a large and small head, and the small head is slender. This kind of thin and long blade is easily deformed and resonated by the wind force, and is easily broken by the wind pressure, so it has wind resistance. The poor problem, the resonance during rotation, can cause the problem of low power generation. Due to the above-mentioned problems of this type of wind rotor blades, and the current wind turbines are developing in the direction of large-scale and high-power, with the diameter of the wind rotor The increase of blade damage rate is higher and the service life is shorter, which has a greater negative impact on the development of wind power generation

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