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Control device and control method for compensating torque adjusting delay of wind generating set

A wind turbine, torque adjustment technology, applied in the direction of wind engine control, wind engine, wind power generation, etc., can solve problems such as unreachable

Inactive Publication Date: 2012-05-09
沈阳工业大学自控技术有限公司
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  • Claims
  • Application Information

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Problems solved by technology

The most important uncontrollable factors of wind turbines are the randomly changing wind speed and the hysteresis of torque adjustment. To eliminate the influence of both, the traditional PID control often cannot achieve the desired effect.

Method used

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  • Control device and control method for compensating torque adjusting delay of wind generating set
  • Control device and control method for compensating torque adjusting delay of wind generating set
  • Control device and control method for compensating torque adjusting delay of wind generating set

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings.

[0045] A control device for compensating the lag in torque regulation of wind turbines, such as figure 2 As shown, it includes wind turbine, pitch control mechanism, parameter detection module, main controller, overvoltage protection module and frequency conversion controller. SUT-200 doubly-fed induction generator is selected for the wind power generating set, and the model of the parameter detection module is WE100B, the principle is as follows Figure 5 As shown, the main controller is WE1000-D controller, the switch is WE180 switch, the I / O module is WE100B module, and the frequency conversion controller is VACONNXI 03855 inverter. The principle of wind turbine torque compensation is as follows: figure 1 shown.

[0046] The pitch-changing mechanism includes a pitch-changing motor, an electric push rod and a pitch-changing shaft; the pitch-changing motor is conn...

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Abstract

A control device and a control method for compensating torque adjusting delay of a wind generating set are provided. The control device comprises the wind generating set, a pitch control mechanism, a parameter detecting module, a main controller, an overvoltage protecting module and a frequency conversion controller. By the adoption of the control method for compensating the torque adjusting delay of the wind generating set, the influence of torque adjustment on a whole machine is reduced. On one hand, a feed forward link is added in the control device and the control method, thereby greatly removing the delay caused by torque control and the influence of a random wind speed on quality of system control, optimizing power output of the set and improving responding speed of a subsystem controlled by a fan; on the other hand, a damper is added so as to reduce influence of load impact on a set transmission chain. By means of the control device and the control method for compensating the torque adjusting delay of the wind generating set, responding delay of the wind generating set caused by the torque control and the impact on transmission chain loads can be reduced.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a control device and method for compensating lag in torque regulation of a wind power generating set. Background technique [0002] At present, variable-speed and variable-pitch wind turbines have become the main models in the field of wind power generation. The reasons are as follows: 1. At low wind speeds, the wind rotor can be operated at the best blade tip speed ratio to obtain the best wind speed. Wind energy utilization coefficient C pmax ; 2. When the wind speed is high, the aerodynamic torque can be limited by pitch control, so that the unit can output constant power. [0003] When the wind power system presents time lag and is subject to many interference factors and high interference frequency, the rapidity and stability of the system response speed are very important. The main uncontrollable factors of wind turbines are the randomly changing...

Claims

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Application Information

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IPC IPC(8): F03D7/00H02P9/04
CPCY02E10/723Y02E10/72
Inventor 王湘明郭成广董磊书孙东华杨波
Owner 沈阳工业大学自控技术有限公司
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