Anti-interference optimal power tracking control method of interfered wind driven generator system

Abstract

The invention discloses an anti-interference optimal power tracking control method of an interfered wind driven generator system. According to the method, for strong interference and uncertainty existing in a permanent synchronous wind driven generator system, based on vector control, system identification and a combined tracking control method of a self-adaptation expansion state observer and model prediction optimal control are adopted, namely, according to measured actual rotation speed of a permanent synchronous wind driven generator and measured current information, partial model information and the interference value observed by the self-adaptation expansion state observer are identified and introduced into a prediction model. In this way, a combined prediction model containing interference information and uncertainty is obtained and more ideal and accurate for the wind driven generator system, model prediction optimal control exerts closed-loop adjusting capacity easily, and while a closed-loop system restrains external interference of the wind driven generator, an optimized high-performance power tracking result can be obtained.

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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Problems solved by technology

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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