Wind power generating set, pitch control method and device
A technology for wind turbines and control devices, which is applied in the control of wind turbines, wind turbines, engine controls, etc., and can solve problems such as the inability of independent pitch control to avoid normal operation, improve system reliability, and reduce loads Effect
Active Publication Date: 2022-04-19
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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Problems solved by technology
[0003] However, the input of the existing independent pitch control technology is the blade root load sensor and the azimuth sensor, but the use of the azimuth sensor not only has a certain hardware cost, but also has a certain risk of failure
Independent pitch control will not operate if the azimuth sensor fails
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[0027] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like numerals refer to like parts throughout. The embodiments are described below in order to explain the present invention by referring to the figures. Apparently, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.
[0028] figure 1 A flow chart showing a pitch control method for a wind power generating set according to an exemplary embodiment of the present invention.
[0029] refer to figure 1 , in step S101, obtain the impeller speed of the wind power generating set and the load on the blade root of each blade in a specific direction,...
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The present disclosure provides a wind power generating set, a pitch control method and a device. The pitch control method includes: obtaining the impeller speed of the wind power generating set and the load on the blade root of each blade in a specific direction, wherein the specific direction is perpendicular to the axial direction of the impeller and the length direction of the blade; impeller rotation speed to estimate the impeller azimuth angle; based on the estimated impeller azimuth angle and the load of the blade root of each blade in the specific direction to calculate the additional pitch angle of each blade; according to the calculated The additional pitch angle of each blade is used to perform independent pitch control. According to the wind turbine, pitch control method and device, the traditional azimuth sensor can be omitted, and the phase compensation value can be obtained based on the calculation of the impeller speed, so as to perform independent pitch control, which not only saves hardware costs, but also avoids the failure of the azimuth sensor. Risk of independent pitch control not functioning properly.
Description
technical field [0001] The present invention generally relates to the technical field of wind power generation, and more specifically, relates to a wind power generator set, a pitch control method and a pitch control device for the wind power generator set. Background technique [0002] The development of wind turbine products is constantly developing in the direction of large-scale, large-capacity, and offshore. Due to the increase of the diameter of the impeller and the weight of the unit, the load of the unit increases; the existence of wind shear, tower shadow effect, turbulence and other reasons make the aerodynamic moment in the impeller surface unbalanced, resulting in fatigue of blades, drive trains, towers and other components Therefore, how to reduce the load through the control method has become the focus and difficulty of the development of large impeller diameter units, and the independent pitch control technology provides an effective method and way to solve th...
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IPC IPC(8): F03D7/04
CPCF03D7/043F03D7/0224F05B2270/304F05B2270/331F05B2270/705Y02E10/72
Inventor 陈博宇赵树椿张虎
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD