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Wind generating set and variable pitch driving system thereof

A technology of wind power generating set and drive system, which is applied in the direction of wind power generator, control of wind power motor, wind power generation, etc. It can solve problems such as uneven force on the tooth surface of the gear and reduce the service life of the pitch drive system, and achieve compact structure, Improvement of reliability and service life, and the effect of increasing the number of teeth

Active Publication Date: 2015-04-22
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned pitch drive system, an open gear transmission is used, which requires certain lubrication conditions, and the output shaft of the reducer 3 is a cantilever support structure, which may cause a certain deformation of the output shaft, which may cause the meshing The tooth surface of the gear is unevenly stressed, which reduces the service life of the pitch drive system

Method used

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  • Wind generating set and variable pitch driving system thereof
  • Wind generating set and variable pitch driving system thereof
  • Wind generating set and variable pitch driving system thereof

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Embodiment Construction

[0021] The core of the present invention is to provide a pitch drive system and a wind power generating set including the pitch drive system. The pitch drive system has high reliability and relatively long service life.

[0022] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] refer to figure 2 and image 3 , figure 2 is a structural schematic diagram showing a pitch drive system according to a specific embodiment of the present invention, image 3 yes figure 2 The transmission diagram of the pitch drive system shown.

[0024] According to an embodiment of the present invention, a pitch drive system for a wind generator includes a motor 10 and a reducer. The motor 10 is the power source of the pitch drive system, and the driving force of the motor 10 is decelerated by the transmission system in the speed ...

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Abstract

The invention discloses a variable pitch driving system which is used for a wind generating set. The variable pitch driving system comprises a motor and a reducer which is connected with an output shaft of the motor, wherein the reducer comprises a planet gear transmission system which is connected with the output shaft of the motor and has multistage transmission, and the output end of the planet gear transmission system is fixedly connected with blades of the wind generating set. The closed type gear transmission is adopted in the variable pitch driving system, when the planet gear transmission system is operated, the number of meshed gears is increased, stress of the meshed gears is improved, reliability of the variable pitch driving system is improved, and the service life of the variable pitch driving system is prolonged. In addition, the planet gear transmission system is adopted in the variable pitch driving system, a variable pitch bearing is removed, and the structure of the variable pitch driving system is more compact.

Description

technical field [0001] The present invention relates to the field of wind power generation. Specifically, the present invention relates to a pitch drive system. In addition, the present invention also relates to a wind power generating set with the pitch drive system. Background technique [0002] In the process of using the wind turbine to generate electricity, since the wind direction and wind speed change in real time, in order to control the blade rotation speed and output power of the wind turbine, each blade is equipped with a pitch drive system. The pitch drive system controls the rotation speed of the hub by controlling the angle of the blade relative to the wind direction, thereby realizing the control of the output power. In addition, when the wind speed far exceeds the rated wind speed, the aerodynamic braking method can be used to stop the wind turbine safely. Generally speaking, currently commonly used pitch drive systems include hydraulic pitch systems and ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 方振江
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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