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Fuzzy PI control method and device for variable propeller pitch of wind generating set

A technology for a wind turbine and a control method, which is applied in the control of wind turbines, wind turbines, and engine control, etc., can solve the problems of insufficient adaptability to the operating environment of the fan pitch control method, and achieve performance optimization, enhanced adaptability, and enhanced The effect of adaptability

Inactive Publication Date: 2016-12-21
XUJI GRP +2
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Problems solved by technology

[0004] In order to overcome the above-mentioned defects in the prior art, the technical problem solved by the present invention is that the existing fan pitch control method has insufficient adaptability to individual differences and complex and changeable operating environments.

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  • Fuzzy PI control method and device for variable propeller pitch of wind generating set
  • Fuzzy PI control method and device for variable propeller pitch of wind generating set
  • Fuzzy PI control method and device for variable propeller pitch of wind generating set

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Embodiment Construction

[0034] The technical solution provided by the present invention is a fuzzy PI control method for variable pitch of a wind power generating set, and the method comprises steps as follows:

[0035] 1) Collect generator speed, generator speed acceleration and wind speed;

[0036] 2) Take the generator speed as the feedback signal, compare the feedback signal with the speed given value, and generate the deviation signal

[0037] As the input of the PI controller, the output of the PI controller controls the pitch motor and adjusts the pitch angle; through the fuzzy controller,

[0038] Output described PI controller scaling coefficient FKp and integral scaling coefficient FKi, carry out the coefficient of described PI controller

[0039] to adjust.

[0040] Each step will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as Figure 5 As shown, the feedback signals of the wind turbine generator speed, generator speed acceleration and wind...

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Abstract

The invention relates to a fuzzy PI control method and device for variable propeller pitch of a wind generating set. The method comprises the following steps: a PI controller is used for controlling a propeller pitch angle of the wind generating set according to a deviation signal; and a fuzzy controller is used for regulating parameters of the PI controller. The method can effectively solve the time lag problem and the controlled object nonlinear problem in viable propeller pitch control of a fan, and improves adaptive capacity, to a complex working condition, of the controller.

Description

technical field [0001] The invention relates to the technical field of wind power generating sets, in particular to a fuzzy PI variable gain control method and device for variable pitch of wind power generating sets. Background technique [0002] First of all, due to the variability of wind resources, the probability distribution of wind speed and wind turbulence characteristics of different machine positions are quite different, which makes the operating environment of the wind turbines on the same wind field different; Different suppliers of main components such as boxes and individual differences in the production and installation process will lead to different dynamic characteristics of each wind turbine; at the same time, due to the serious nonlinearity, inertia and delay of the wind turbine pitch system, the wind turbine pitch system It is a complex controlled object with multiple variables, strong nonlinearity and uncertainty. The traditional PID control method has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/328Y02E10/72
Inventor 卢晓光岳红轩刘伟鹏吴鹏许明张延辉
Owner XUJI GRP
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