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Adoptive sliding mode control method and adoptive sliding mode control system of wind power generation variable-pitch actuator

A technology of adaptive sliding mode and actuator, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., and can solve the problems such as undiscovered information related to the control of variable pitch actuators, different emphases, etc.

Active Publication Date: 2012-09-12
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After a preliminary search, some patents and technical solutions related to pitch control were found, which were different from the focus of this case, and no information related to the control of pitch actuators was found

Method used

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  • Adoptive sliding mode control method and adoptive sliding mode control system of wind power generation variable-pitch actuator
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  • Adoptive sliding mode control method and adoptive sliding mode control system of wind power generation variable-pitch actuator

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Embodiment

[0058] Take the 1.65MW doubly-fed wind power generation system as an example, adopt the method proposed by the present invention to control, as figure 1 , figure 2 As shown, the adaptive sliding mode control method of the wind power variable pitch actuator, the specific implementation process is as follows:

[0059] (1) Use the encoder to detect the actual mechanical position angle θ of the pitch motor m .

[0060] (2) The motion control card receives the position command signal θ from the whole machine control system * And the position feedback signal θ provided by the encoder m .

[0061] (3) the processing unit (as digital signal processor, single-chip microcomputer etc.) of motion control card realizes described self-adaptive sliding mode control method, comprises the following steps:

[0062] I. Calculation of position tracking error e and velocity tracking error

[0063] e = ...

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Abstract

The invention discloses an adoptive sliding mode control method and an adoptive sliding mode control system of a wind power generation variable-pitch actuator. The adoptive sliding mode control system comprises a coder, a motion control card, a driving control plate, a frequency converter and a variable-pitch motor. The coder is used for detecting an actual mechanical position angle theta of the variable-pitch motor, the motion control card is used for receiving position instruction signals theta* sent out by a complete machine control system, the mechanical position angle theta provided by the coder is combined so as to achieve the adoptive sliding mode control method and work out that electromagnetic torque instruction signals Te* are sent to the driving control plate, and the driving control plate generates the driving signals according to the Te* and controls the variable-pitch motor through the frequency converter.

Description

technical field [0001] The invention relates to the variable pitch control of wind power generation, in particular to an adaptive sliding mode control method and system for a variable pitch actuator of wind power generation. Background technique [0002] With the depletion of resources in the world and the enhancement of human environmental awareness, wind energy, as a renewable and green energy, has attracted more and more attention. However, the conversion process of wind energy is essentially a random process caused by wind speed. Moreover, some parameters in the wind power generation system are not precisely known, and wind speed, wind direction, and load changes will also be encountered during actual operation. How to make the designed controller have a simple algorithm and Strong robustness and good dynamic characteristics are an important problem of wind power generation system, and it is also a valuable control problem. At present, wind turbines above the megawatt ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 胡婵娟万宇宾郭知彼王立鹏张劲松宋建秀欧阳华臧晓迪徐凤星巫发明张玉仕罗梅红
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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