Wind power generator

Abstract

The invention discloses a wind power generator. The wind power generator comprises a tower, at least one impeller part, a wind guide hood, a plurality of wind guide windows, a cap body, a first drive device, a second drive device, a wind power and wind direction measurer and a control device, wherein the at least one impeller part is arranged at the upper end of the tower, and comprises a wind blade main shaft and blades; the wind guide hood is a hollow cylinder, and the tower is vertically arranged in a cavity of the hollow cylinder; the plurality of wind guide windows are uniformly arranged on the sidewall of the wind guide hood in columns; the cap body is arranged at an opening in the upper end of the wind guide hood in a covering manner; the first drive device is used for driving the opening and closing of the plurality of wind guide windows; the second drive device is used for driving each triangular plate body to rotate by taking the axis of the triangular plate body as a circle centre; and the wind power and wind direction measurer is arranged on the cap body. The wind power generator provided by the invention is simple in structure, safe to use, convenient to maintain, and safe and reliable in performance. The invention further discloses a control method for the wind power generator. The method is capable of effectively controlling the safe running of the wind power generator, and adequately utilizing wind energy for generating power on the basis of protecting the safety of the wind power generator.

Description

technical field [0001] The invention relates to the technical field of wind power generation. More specifically, the present invention relates to a wind power generator. Background technique [0002] In recent years, wind power generators utilizing wind power have attracted attention from the viewpoint of environmental protection. A wind power generator generally has a rotor in which a plurality of blades are attached to a hub. The rotor is mounted on a nacelle on a tower erected on land or in the sea. In such a wind power generator, the blades receive wind and the rotor rotates, and the rotation of the rotor is transmitted to a generator housed in the nacelle, and electric power is generated in the generator. [0003] Features of wind power generation 1) Renewable and clean energy Wind power is a renewable and clean energy that does not consume fossil resources and does not pollute the environment, which is an incomparable advantage of thermal power generation; 2) The co...

AI Technical Summary

Problems solved by technology

In addition, the wind conditions are unstable. Sometimes there is no wind and sometimes there are destructive winds. These are practical problems that must be solved in wind power generation.

[0004] At present, the automatic pitch control system of wind turbines can be roughly divided into three types, namely hydraulic pitch system, electric pitch system and centrifugal passive pitch system. The hydraulic pitch system is prone to oil leakage, the controller is expensive, and the hydraulic oil It is greatly affected by temperature, needs regular oil changes and filters, and many other defects. It is rarely used in the market at present. Compared with the hydraulic pitch system, the electric pitch system has certain advantages and currently occupies the main market, but because of its high cost , is too complicated, has extremely strict requirements on components, and is afraid of lightning and needs frequent maintenance, etc., so it is not a perfect solution. The reason why it occupies the main market is also a helpless move of the wind power industry. Due to the structure, it can only be used in small and medium-sized wind turbines, and the performance is not ideal

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