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Wind power generation vane-change fuzzy control method

A technology of fuzzy control and fuzzy controller, which is applied in the control of wind turbines, wind power generation, wind turbines, etc., to meet the requirements of the power grid, ensure the quality of system control, and achieve the effects of precise and rapid control

Inactive Publication Date: 2012-11-14
BAODING TIANWEI GRP CO LTD
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Problems solved by technology

[0002] With the rapid development of automatic control theory and technology, modern control theories based on the description of state variables have been widely used, but they still rely on the precise mathematical model of the system, and it is difficult to get a good control effect in the power control system

Method used

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Embodiment Construction

[0014] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0015] In the embodiment, both the fuzzy control rules and the look-up table are based on human experience, and a method is designed to adjust the size of the correction factor according to the membership function of the fuzzy target, so as to adjust the control rules. A piecewise biquadratic Lagrangian interpolation algorithm of binary functions is introduced in the self-tuning fuzzy controller. The transformation from discrete control variables to continuous control variables is realized. Therefore, the control of the output power of the wind turbine is more precise and rapid, thereby eliminating the adjustment dead zone and static error of the controller. The quality of system control is guaranteed.

[0016] Establish a correction function f(e) whose deviation is e as the independent variable. When the system deviation is large, give a grea...

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Abstract

The invention relates to a wind power generation vane-change fuzzy control method, which solves the problems of low control quality and low steady-state performance of a wind power generation unit system and belongs to the technical field of application of wind power generation. The technical scheme comprises the following steps of: adjusting the magnitude of a modifying factor according to a membership function of a fuzzy object to achieve an adjustment control rule; introducing a fragmentation biquadratic Lagrange interpolation algorithm of a binary function into a self-setting fuzzy controller to convert discrete control variables into continuous control variables, so that the output power of a wind power generation unit can be relatively accurately and quickly controlled; therefore, the adjusting dead zone and the offset of the controller are eliminated, and the control quality of the system is ensured. In the wind power generation unit, due to the application of a control algorithm in which the self-setting fuzzy controller is combined with the Lagrange interpolation algorithm, wind power can be more accurately controlled, so that the wind power generation unit can better meet the requirements of power grids; and intelligent control over the wind power generation unit has become one of mainstream development directions of the current wind power generation technologies.

Description

Technical field: [0001] The invention relates to a fuzzy control method for variable pitch of wind power generation, which solves the problems of control quality and steady-state performance of a wind power generating set system, and belongs to the technical field of wind power generation applications. Background technique: [0002] With the rapid development of automatic control theory and technology, modern control theories based on the description of state variables have been widely used, but they still rely on the precise mathematical model of the system, and it is difficult to get a good control effect in the power control system. Invention content: [0003] The purpose of the present invention is to provide a fuzzy control method for wind power generation pitch, which does not depend on the precise mathematical model of the controlled object, can overcome the influence of nonlinear factors, has strong robustness to the parameter changes of the adjusted object, and has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00G06N7/02
CPCY02E10/723Y02E10/72
Inventor 车福来赵志强王淼韩贵胜穆桂霞张晓光刘玉龙
Owner BAODING TIANWEI GRP CO LTD
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