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Design Method of Pitch Controller Based on Linear Active Disturbance Rejection Control

A technology of linear active disturbance rejection and design method, applied in the control algorithm type, engine control, wind turbine control and other directions, can solve the problem that the performance of the pitch controller needs to be improved, and achieve the effect of optimal speed regulation performance

Active Publication Date: 2021-12-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the AGC mode, in order to keep the system speed stable, the pitch controller needs to adjust the pitch rate according to the changes of the two operating conditions, the wind condition and the power command, and the performance of the existing pitch controller still needs to be improved.

Method used

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  • Design Method of Pitch Controller Based on Linear Active Disturbance Rejection Control
  • Design Method of Pitch Controller Based on Linear Active Disturbance Rejection Control
  • Design Method of Pitch Controller Based on Linear Active Disturbance Rejection Control

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Embodiment

[0076] In this embodiment, the open-source professional wind turbine simulation software FAST (Fatigue, Aerodynamics, Structures, and Turbulence) provided by the US National Renewable Energy Laboratory (NREL) is used to simulate the control effect. The fan model adopts the 600kW CART3 test model developed by NERL, and its main parameters are shown in Table 1.

[0077] Table 1 Main parameters of NREL 600kW CART3 fan

[0078]

[0079] The present invention applies the linear active disturbance rejection pitch control and the traditional PI pitch control to perform simulations under complex operating conditions, and compares the simulation results.

[0080] A turbulent wind speed with a length of 300s and A-level turbulence intensity is selected for simulation, and a constantly changing power command is set. The wind speed and power command used in the simulation are shown in Figure 3(a). Instructions can simulate complex operating conditions. Figure 3(b) shows the generator...

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Abstract

The invention discloses a pitch controller design method based on linear active disturbance rejection control. When a wind turbine participates in the automatic power generation control of the power system, in addition to the wind speed, the power command of the power grid will also affect the operation stability of the wind turbine. The pitch strategy cannot cope with the complex changes of these two operating conditions and may cause speed oscillation. This method designs a pitch controller suitable for multiple operating conditions based on linear active disturbance rejection control, fully considering different The influence of operating conditions on the sensitivity of pitch angle adjustment aerodynamic power can quickly adjust the adjustment rate of pitch angle according to changes in operating conditions. Compared with the traditional method, the present invention has better rotational speed regulation performance under different operating conditions, and effectively improves the operating stability of the wind turbine.

Description

technical field [0001] The invention belongs to the field of wind turbine pitch control, and in particular relates to a design method of a pitch controller based on linear active disturbance rejection control. Background technique [0002] Due to the randomness of wind speed, large-scale wind power access will lead to greater fluctuations in power system frequency. Therefore, the development of wind power to participate in power system automatic generation control (Automatic Generation Control, AGC) is of great significance to improve the quality of power system frequency regulation. [0003] For the traditional maximum power point tracking (MPPT) operation mode, it aims at maximizing the benefits of a single machine, controls the speed of the wind rotor through the adjustment of electromagnetic power, and realizes the tracking of the maximum power point, and only when the output power reaches the rated power When the pitch angle will be activated. However, in the AGC mode,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/00
CPCF03D7/00F05B2270/328F05B2270/704Y02E10/72
Inventor 陈载宇殷明慧瞿佳刘邹云卜京周连俊谢云云王静波顾伟徐畅李阳
Owner NANJING UNIV OF SCI & TECH