A New Wind Turbine Linkage Pitch System

Abstract

A novel wind turbine linkage variable pitch system drives blades (6) to pitch actively or passively. The power-driven variable pitch is achieved by means of a few sets of the blades (6) having rotating shafts evenly installed on the periphery of a machine head wheel boss (8) by means of a bearing (11) respectively. The novel wind turbine linkage variable pitch system comprises a linkage variable pitch mechanism that drives the blades to rotate, a generator system having a hollow main shaft and an electronic drawing system (2), wherein the linkage variable pitch mechanism is at least composed of an linkage plate module (12) arranged within the wheel boss (8), a spherical plain bearing (13), a linkage plate component (15) connected with the linkage plate module (12), a center bearing (16) on the linkage plate component (15) and a steel wire rope component (25). The novel wind turbine linkage variable pitch system has the technical effects that the structure is simple, the weight is light, the action is reliable, the regulation is convenient, the cost is low, and the linkage accuracy is high, therefore, the operation stability of machine sets is effectively improved, the power generation amount is increased, the service life of the machine sets are prolonged, and the safe operation of the machine sets is guaranteed.

Description

technical field [0001] The invention relates to a novel wind turbine linkage variable pitch system, which is a passive and active pitch variable wind turbine linkage system. Background technique [0002] Wind energy is a renewable, green and environmentally friendly energy. How to effectively utilize wind energy is a major issue facing mankind. my country is a country with a large population in the world, and its dependence on energy is also very large. Wind energy is one of the main new energy sources that my country and other countries in the world will develop at present and in the future. Due to geographical differences, there are great differences in wind speed and wind direction in nature; how to make wind turbines work efficiently under the influence of different wind speeds and wind directions is an important issue that wind turbine designers need to solve. The main components of the fan are: shroud, engine room, anemometer system and control system. [0003] At p...

AI Technical Summary

Problems solved by technology

The control system of this structure is relatively complicated and the maintenance cost is high

Especially for small and medium-sized wind turbines, the mechanism of the electric pitch control system is complex, its manufacture and installation are difficult, there are many faults, and the relative cost is relatively high

However, small wind turbines generally adopt fixed-pitch blade stall control technology and yaw control technology. Due to the influence of harsh weather conditions, there are disadvantages such as unstable power control, low power generation efficiency, poor safety, and short fan life.

Even if some small and medium-sized wind turbines adopt linkage pitch control technology, they generally adopt gear linkage, which has a complicated structure and low precision.

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