Yaw control method and yaw hydraulic control system of wind power generator

A technology of hydraulic control system and wind generator, which is applied in the direction of wind engine control, wind engine, wind motor combination, etc. It can solve the problems of poor wind field adaptability, poor reliability, large yaw error, etc., and achieve real-time wind, The effect of extending the service life and reducing the yaw error

Active Publication Date: 2018-06-29
SANY ELECTRIC CO LTD
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Problems solved by technology

[0005] In view of this, the present invention proposes a yaw control method and a yaw hydraulic control system of a wind turbine to solve the problems of real-time wind difference, large yaw error, poor wind field adaptability, and poor reliability.

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  • Yaw control method and yaw hydraulic control system of wind power generator
  • Yaw control method and yaw hydraulic control system of wind power generator
  • Yaw control method and yaw hydraulic control system of wind power generator

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Embodiment Construction

[0023] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] The yaw control method of a kind of wind power generator in this preferred embodiment is taken as an example:

[0025] According to the wind speed load of the wind field, at least two yaw driving devices for driving the wind generator to yaw are arranged. The number of yaw drives allows the magnitude and range of the actual load value of the yaw drives, the rated power of each yaw drive and the number of yaw drives to be selected. The yaw drive can be an electric or hydraulic drive, such as an electric or hydraulic motor. In addition, it is also necessary to divide the wind speed gear according to the wind speed of the wind field. When dividing the wind speed gear, it can be based on the...

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Abstract

The invention discloses a yaw control method for a wind driven generator. At least two yaw driving devices driving yaw of the wind driven generator are arranged. The number of the started yaw driving devices is controlled according to the air speed of a wind field; the number of the started yaw driving devices is controlled to be increased while the air speed of the wind field is increased; and the number of the started yaw driving devices is controlled to be decreased while the air speed of the wind field is decreased. The invention further discloses a yaw hydraulic control system of the wind driven generator. The yaw control method and the aw hydraulic control system of the wind driven generator are achieved on the basis of the yaw driving force needed by loads. Thus, the wind field adaptability is high, real-time wind alignment can be achieved, yaw errors are small, maintainability is good, manufacturing cost is low, and the requirement for an external environment is low.

Description

technical field [0001] The invention relates to the field of wind power generators, in particular to a yaw control method and a yaw hydraulic control system of a wind power generator. Background technique [0002] Wind power generation is the process of converting the wind energy captured within the windward swept area of ​​the fan blades into electrical energy. In the actual wind power generation process, the direction of the wind is constantly changing, and the size is also unstable, so it is necessary to make the wind rotor of the wind power generation equipment always face the maximum direction of the wind. The yaw system is the mechanism that realizes this function. The yaw system is mainly composed of four parts: yaw measurement, yaw control, yaw drive and yaw brake. The yaw driving system mainly accepts the commands of the yaw control system, and drives the yaw slewing support (usually a rolling bearing, the wind turbine is fixed on the inner ring of the bearing, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00F03D9/00
CPCY02E10/72Y02P70/50
Inventor 李东程战锋刘旭锋
Owner SANY ELECTRIC CO LTD
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