Pitch drive equipment and control method

A kind of technology of transmission equipment and transmission device, which is applied in the direction of engine control, wind turbine control, mechanical equipment, etc., and can solve problems such as increased load on the transmission device, failure of wind power generators, and increased load on pitch bearings, etc.

Active Publication Date: 2019-07-26
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the heating power of wind turbines increases and the length and weight of blades continue to increase, the load required to drive the pitch bearing increases, and the burden on the transmission device increases.
The strength of the transmission device is not enough to support the transmission device under extreme load and fatigue load for a long time, making the transmission device prone to damage, which leads to the failure of the wind turbine

Method used

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  • Pitch drive equipment and control method
  • Pitch drive equipment and control method
  • Pitch drive equipment and control method

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Embodiment Construction

[0033] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. The present invention is by no means limited to any specific configurations and algorithms presented below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

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Abstract

The invention discloses variable-blade transmission equipment and a control method and relates to the field of wind power generation. The variable-blade transmission equipment comprises a plurality ofmotors and a plurality of transmission devices. The multiple motors are configured in a manner that each motor drives one transmission device, and the output torques of the multiple motors are the same or the difference among the output torques is within the allowed range. The multiple transmission devices are configured to drive a variable-blade bearing to rotate under the drive of the multiplemotors. By means of the variable-blade transmission equipment and the control method, the problem that the strength of the transmission device is insufficient to support the transmission device to bein a limit loading state or a fatigue loading state for a long time is solved.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a pitch-variable transmission device and a control method. Background technique [0002] Energy is the main material basis of social economy and human life, and the driving force of social development. However, the reserves of non-renewable energy such as petroleum, coal, and natural gas, which are the main pillars of energy in the world, are decreasing day by day. All countries in the world are developing wind power generation. As a new energy source, wind power generation has formed a mature scale. [0003] A wind turbine is a device that converts wind energy into electrical energy. In the process of wind power generation, the wind drives the blades of the wind generator to rotate, thereby driving the wind generator in the wind generator to rotate and generate electric energy. The higher the wind speed, the faster the speed of the wind turbine. In order to ensure the sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00F03D15/00
CPCF03D7/00F05B2260/40F05B2270/328Y02E10/72
Inventor 申亮刘众
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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