Anti-disturbance Optimal Power Tracking Control Method for Disturbed Wind Turbine System
A technology for wind turbines and optimal power, which is applied in the control of wind turbines, wind turbines, and wind power generation, etc., can solve the problems of affecting the observation accuracy, saturation of the total control amount, and large interference pressure, so as to improve the estimation accuracy, The effect of reducing the estimation burden
Active Publication Date: 2018-06-29
YANGZHOU UNIV
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In the case of large-scale parameter changes and strong external disturbances in the above methods, the disturbance observer will be under great pressure to estimate the disturbance, which will affect the observation accuracy, and the simple combination of feedforward and feedback will cause the total control quantity to saturate. How to coordinate the system? The problem with two different controls
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[0030] The present invention is further described in conjunction with the accompanying drawings and embodiments. The present invention aims at problems such as strong interference and uncertainty existing in the permanent magnet synchronous wind power generator system, and adopts advanced control such as self-adaptive extended state observer, system identification, model predictive control, etc. Combining the method and optimization technology with the vector control technology, an anti-interference compound predictive optimization control scheme is proposed to ensure that the system can still capture wind energy to the greatest extent even under the conditions of large-scale perturbation of parameters and various external disturbances.
[0031] 1) The principle of maximum wind energy capture: such as figure 1 As shown, the rotor of the wind turbine can work in three modes of maximum power capture, constant speed and constant power according to objective conditions such as wind...
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The invention discloses an anti-jamming optimal power tracking control method for a disturbed wind power generator system. The method aims at problems such as strong interference and uncertainty existing in a permanent magnet synchronous wind power generator system. Based on vector control, the method adopts a system The composite tracking control method of identification and adaptive expansion state observer and model predictive optimal control is to identify part of the model information and adaptive expansion state observation based on the measured actual speed of the permanent magnet synchronous wind turbine and the measured current information The disturbance value observed by the wind turbine is introduced into the prediction model, and a composite prediction model including disturbance information and uncertainty is obtained, which makes the prediction model of the wind turbine system more ideal and accurate, and is conducive to the model prediction optimization control to exert its closed-loop adjustment ability, making the closed-loop The system can achieve optimized high-performance power tracking results while suppressing the external disturbance of the wind turbine.
Description
technical field [0001] The invention relates to an anti-jamming optimal power tracking control method for a disturbed wind power generator system, in particular to a research on the maximum wind energy capture of a permanent magnet synchronous wind power generator based on the disturbed characteristics of the fan and the principle of wind energy capture, which belongs to the wind power generation system High-efficiency operation control technology field. Background technique [0002] With the vigorous development of the wind power industry, people put forward higher requirements for the safety and reliability, cost, power generation efficiency and power generation quality of the wind power generation system. It is well known that the wind generator is one of the key components of the wind power generation system, and the speed control of the wind generator directly affects the performance and efficiency of the wind power generation system. Permanent magnet synchronous wind ...
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IPC IPC(8): F03D7/00
CPCY02E10/72
Inventor 李生权李娟王芹
Owner YANGZHOU UNIV