Intelligent variable pitch speed regulation method and system for wind driven generator

Abstract

An intelligent variable pitch speed regulation method and an intelligent variable pitch speed regulation system for a wind driven generator belong to the field of wind power generation. The method comprises a first step that a rotation speed alarm value of the wind driven generator is preset; a second step that whether the rotation speed of the wind driven generator exceeds the preset rotation speed alarm value or not is judged; a third step that if the rotation speed of the wind driven generator exceeds the preset rotation speed alarm value, a variable pitch speed regulation plate of the intelligent variable pitch speed regulation system is used for regulating the rotation speed of the wind driven generator; a fourth step that when the rotation speed wind driven generator gradually decreases to be lower than the rotation speed alarm value, the intelligent variable pitch speed regulation system stops working. According to the invention, when the wind driven generator encounters strong wind or typhoons, and the rotation speed of the generator exceeds the designed rated rotation speed, the rotation speed of an engine can be rapidly changed, thus the service life of the wind driven generator is longer, and the maintenance is more reasonable.

Description

technical field [0001] The invention relates to a vertical wind power generator, in particular to a method and system for intelligent variable pitch speed regulation of the wind power generator. technical background [0002] The recycling of wind energy has been known for thousands of years. The use of wind power to generate electric current has also been known since a long time, generally since the invention of electric generators. [0003] Since the existing vertical axis wind turbines do not have an automatic intelligent pitch change system, when the wind turbine encounters strong winds or typhoons and needs to slow down or stop, the current common practice is to use electromagnetic brakes, manual brakes and other manual or electric shutdown methods. [0004] The problem with the method in the prior art is: when the airflow is pushing the wind turbine to accelerate, if the wind turbine needs to be decelerated and shut down, people use electric brakes to slow down or manu...

AI Technical Summary

Problems solved by technology

[0003] Since the existing vertical axis wind turbines do not have an automatic intelligent pitch change system, when the wind turbine encounters strong winds or typhoons and needs to slow down or stop, the current common practice is to use electromagnetic brakes, manual brakes, etc. to stop manually or electrically.

[0004] The problem with the method in the prior art is: when the airflow is pushing the wind turbine to accelerate, if the wind turbine needs to be decelerated and shut down, people use electric brakes to slow down or manual brakes to slow down or stop the wind turbine, which is equivalent to giving a The car that is refueling and speeding up brakes instead of disconnecting the accelerator first and then braking; in addition, the means of letting the wind turbine brake while accelerating, when encountering a strong typhoon, no matter how much the braking force is, its braking system will not Due to the principle of friction and heat generation, it will burn out. When the brake system burns out, the wind turbine will be out of control and will cause a speeding car, and eventually the entire wind turbine system will burn out.

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