Improved active disturbance rejection controller and system for variable pitch control of wind turbine generator

An active disturbance rejection controller and wind turbine technology, applied in the field of wind power, can solve the problems of large amount of calculation and low efficiency, and achieve the effect of strong anti-interference ability, guaranteeing quality and efficiency, and good control effect.

Inactive Publication Date: 2021-07-13
SHANGHAI DIANJI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional Active Disturbance Rejection Controller (ADRC) has been successfully applied to the wind turbine pitch system due to its strong robustness and anti-interference ability, but there is still a certain delay, and the amount of calculation required for parameter setting is relatively large. Large, inefficient and other defects

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  • Improved active disturbance rejection controller and system for variable pitch control of wind turbine generator
  • Improved active disturbance rejection controller and system for variable pitch control of wind turbine generator
  • Improved active disturbance rejection controller and system for variable pitch control of wind turbine generator

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[0032] Such as figure 1 As shown, the present invention discloses a wind turbine pitch control system with an improved ADRC controller, including an improved ADRC controller and a controlled wind turbine connected to each other, and the improved ADRC controller is used to control the controlled wind turbine disturbance, including tracking differentiator, nonlinear combination module, extended state observer and BP neural network module, BP neural network module is embedded in the extended state observer, used to fit part of the disturbance, and online adjustment of the extended state observer parameter;

[0033] When the system is working, the estimation of the disturbance includes two parts, specifically: the disturbance value f predicted by the BP neural network module BP and the perturbation value estimated by the extended state observer That is, the total disturbance estimated by the improved ADRC

[0034] The parameters of the extended state observer adjusted by the...

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Abstract

The invention relates to an improved active disturbance rejection controller for variable pitch control of a wind turbine generator, which is connected with a controlled fan, is used for controlling disturbance of the controlled fan, and comprises a tracking differentiator, a nonlinear combination module, an extended state observer and a BP neural network module, wherein the BP neural network module is embedded in the extended state observer and is used for fitting partial disturbance, and adjusting parameters of the extended state observer on line. When the system works, disturbance estimation comprises two parts, specifically, a disturbance value fBP predicted by the BP neural network module and a disturbance value estimated by the extended state observer, and compared with the prior art, the system has the advantages of being higher in anti-interference capacity, wider in range, better in control effect and the like.

Description

technical field [0001] The invention relates to the technical field of wind power, in particular to an improved active disturbance rejection controller and system for pitch control of wind turbines. Background technique [0002] Active Disturbance Rejection Controller (ADRC) is an automatic control method applied in industrial process control. Its main advantages are that it can automatically track random disturbances in the system and automatically compensate the control output. The precise mathematical model of the controlled object There is no strong dependence, and it has strong anti-interference ability and control robustness. This control method has been more and more widely used in industrial process control, and its control superiority has been recognized by field engineering technology. widely recognized by personnel. [0003] The traditional Active Disturbance Rejection Controller (ADRC) has been successfully applied to the wind turbine pitch system due to its str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCG05B19/41885G05B2219/32339Y02P90/02
Inventor 左亚辉谢源姜珊钱锴任怀信
Owner SHANGHAI DIANJI UNIV
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