Yaw control method and yaw hydraulic control system of wind driven 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: 2015-11-25
SANY ELECTRIC CO LTD
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  • Abstract
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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 driven generator
  • Yaw control method and yaw hydraulic control system of wind driven generator
  • Yaw control method and yaw hydraulic control system of wind driven generator

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Embodiment Construction

[0023] It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the drawings and in conjunction with the embodiments.

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

[0025] At least two yaw driving devices for driving the wind turbine to yaw are arranged according to the wind speed load of the wind farm. The number of yaw drive devices can be the size and range of the actual load value of the yaw drive, and the rated power of each yaw drive device and the number of yaw drive devices can be selected. The yaw drive device can adopt an electric or hydraulic drive device, such as an electric motor or a hydraulic motor. In addition, it is also necessary to divide the wind speed gears according to the wind speed of the wind farm. When dividing the win...

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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 is the process of converting wind energy intercepted in the swept area of ​​wind turbine 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 wheel 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 yaw measurement, yaw control, yaw drive and yaw brake. The yaw drive system mainly accepts the command 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, and the tower is fixed on the outer ring of...

Claims

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Application Information

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Patent Type & Authority Applications(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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