Study On The Control System For Wind-Driven Brushless Doubly-Fed Generator

Wind power has been one of fast growing energy industry of the past twenty years. As the wind power itself has grown, the wind power technology has also increased largely. With the development of the power electronic technology and manufacturing technology, brushless doubly-fed machine has drawn people's attention, because it has excellent characters, such as, it can be used as asynchronous machine or synchronous machine without any change of its structure, and it has simple but firm and dependable structure, it can be used as doubly-fed machine without brush, its power factor can be adjusted. It is a focus also, used as wind-driven generator. Under the background, on the basis of the study of brushless doubly-fed machine and wind power technology, control system for wind-driven brushless doubly-fed generator was studied in this paper.In this paper, the basic theories of brushless doubly-fed machine were studied first, and on the basis of the theories, the mathematic model of brushless doubly-fed machine was built. Stator magnetic flux oriented vector control strategy of brushless doubly-fed machine was studied also. The simulation model of control system for wind-driven brushless doubly-fed generator was built with Matlab/Simulink. And the system was analyzed used the model. The control method of doubly PWM converter which fitted to control brushless doubly-fed generator was studied. At last the digital control system for wind-driven brushless doubly-fed generator was given. The system's core circuits were industrial control module PC 104 and DSP TMS320LF2407A. The key components of the system were given also. The experiment system was built, and some experiments for brushless doubly-fed machine and control were done.