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Electric direct drive wind power pitch device

A direct-drive, wind power technology, applied in the direction of engine, wind power generation, wind turbine, etc., can solve the problem of difficulty in replacing the timing belt, and achieve the effect of high transmission efficiency, simple mechanical connection structure and fast speed.

Active Publication Date: 2017-05-17
成都瑞迪智驱科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also difficult to replace the timing belt when it reaches the end of its service life

Method used

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  • Electric direct drive wind power pitch device
  • Electric direct drive wind power pitch device
  • Electric direct drive wind power pitch device

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the drawings.

[0026] There are three blades of the wind turbine. A complete set of pitch system requires three electric direct-drive wind power pitch devices of the present invention (hereinafter referred to as the pitch drive system), and each pitch drive system of the present invention drives one blade. And the three electric pitch drive systems are evenly arranged in the hub at 120 degrees. In order to make the description concise, only a single pitch drive system is introduced, and the linkage of the three can be controlled by the central controller.

[0027] The present invention includes a linear drive mechanism 4, a connecting rod 5, a mounting frame 7, a hub 1, a pitch bearing outer ring 2 and a pitch bearing inner ring 3. The pitch bearing outer ring 3 is fixed on the hub 1, and the pitch bearing inner ring 3 and the pitch bearing outer ring 2 are in a rotational fit. The two ends of the l...

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Abstract

The invention discloses a wind power driving system, and particularly relates to an electric direct-driven type wind power variable-pitch device. The wind power variable-pitch driving system is high in reliability and small in occupied space, and comprises a hub, a variable-pitch bearing outer ring and a variable-pitch bearing inner ring, wherein the variable-pitch outer ring is arranged on the hub; the variable-pitch bearing inner ring is in running fit with the variable-pitch outer ring; the electric direct-driven type wind power variable-pitch device further comprises a linear driving mechanism and a connecting rod; two ends of the linear driving mechanism are fixed on the hub; one end of the connecting rod is hinged to the linear driving mechanism, and the other end of the connecting rod is hinged to the variable-pitch bearing inner ring. The linear motion provided by the linear driving mechanism can be transformed by the connecting rod and a mounting rack to rotation of the variable-pitch bearing inner ring. The whole mechanism is compact and reliable in structure, small in occupied space, low in manufacturing difficulty and low in cost.

Description

Technical field [0001] The invention relates to a wind power drive system, in particular to an electric direct-drive wind power pitch device. Background technique [0002] The variable pitch technology is adopted for wind turbines above the megawatt level in commercial operation worldwide. The pitch technology and frequency conversion technology cooperate to improve the power generation efficiency and quality of the wind turbine, so that the wind turbine can obtain the best performance under various working conditions and reduce the impact of wind on the wind turbine. Together with variable frequency technology, it forms the core technology of megawatt variable speed constant frequency wind turbines. With the continuous maturity and development of wind power industry technology, the advantages of variable pitch wind turbines have become more and more prominent. The reliability of wind turbine operation has been greatly improved, with high wind energy utilization coefficient, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCY02E10/72Y02P70/50
Inventor 王晓卢晓蓉马奔周小平肖平
Owner 成都瑞迪智驱科技股份有限公司
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