Control of variable speed variable pitch wind turbine based on a disturbance observer

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Ren, Haijun^1 ; Lei, Xin^1

School of Advanced Manufacturing Engineering, Chongqing University of Posts and Telecommunications, Chongqing

400065, China^1

关键词: Control strategies;    Disturbance observer;    External disturbances;    Sliding mode controller;    Sliding modes;    State;    space models;    Variable speed-variable pitches;    Wind speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012047/pdf
DOI  :  10.1088/1755-1315/94/1/012047

来源: IOP

【 摘 要 】

In this paper, a novel sliding mode controller based on disturbance observer (DOB) to optimize the efficiency of variable speed variable pitch (VSVP) wind turbine is developed and analyzed. Due to the highly nonlinearity of the VSVP system, the model is linearly processed to obtain the state space model of the system. Then, a conventional sliding mode controller is designed and a DOB is added to estimate wind speed. The proposed control strategy can successfully deal with the random nature of wind speed, the nonlinearity of VSVP system, the uncertainty of parameters and external disturbance. Via adding the observer to the sliding mode controller, it can greatly reduce the chattering produced by the sliding mode switching gain. The simulation results show that the proposed control system has the effectiveness and robustness.