Wind-driven generator

Abstract

The invention provides a wind-driven generator which comprises propellers, a hub, a tower, a propeller regulation device and a protection device, wherein the protection device comprises a second proximity switch, a second limit stop and a limit switch; the second proximity switch and the limit switch are fixed on a bracket of a propeller regulation motor; the second limit stop is fixed on a propeller regulation disc; and the second proximity switch is used for detecting whether each propeller is at a feathering shutdown angle. In the wind-driven generator provided by the invention, a rotary encoder is used for acquiring propeller parameters such as propeller rotation speed, propeller pitch angle and the like, and a first proximity switch or the second proximity switch is used for judging the accuracy of the propeller pitch angle of the propellers detected by the rotary encoder, so that failure of the rotary encoder can be found in time. Besides, the limit switch can be triggered when the propeller pitch angle is at a limit protection angle, thereby providing dual protection for the wind-driven generator, avoiding propeller breaking, runaway or other accidents, lowering the maintenance cost of the wind-driven generator and greatly reducing the triggering frequency of the limit switch.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a wind power generator. Background technique [0002] As a clean and renewable energy, wind energy has been paid more and more attention by countries all over the world. my country is rich in wind energy resources, and the potential for generating electricity from wind energy is huge. [0003] Today, people usually use wind turbines to convert wind energy into electricity. figure 1 It is a structural schematic diagram of a wind power generator in the prior art. Such as figure 1 As shown, the wind generator includes: a blade 101 , a hub 102 , a generator 103 , a tower 104 and a tower base 105 . The blade 101 is installed on the hub 102, and the wind acts on the blade 101 at a certain angle and speed, causing the blade 101 to generate a rotational torque and rotate, thereby converting wind energy into mechanical energy, and the rotating blade 101 will driv...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a wind power generator, which is used to solve the problems of frequent triggering of the limit switch of the wind power generator, low power generation efficiency, safety issue

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