Research On Brushless Excitation Control Strategy Of Electrical Excited Synchronous Wind Generator

As an important clean and renewable energy, wind energy is a hot researchtopic. Wind power generation is a great way to use the wind energy. China hasthe largest installed capacity of wind turbine generator in the world. Thesynchronous brushless wind turbine has independent excitation system, thereforeit has a broad application prospects in the field of wind power. The brushlessexcitation system ensures the normal and reliable operation of the generator. Italso ensures the generator a qualified power output. The technical index of thesystem can also be effectively improved. So to study the use of the brushlessexcitation system in the synchronous wind turbine is very necessary.The main content of this paper has following three aspects:1) The base theory of synchronous generator is deeply analyzed. Thestructure, characteristics and work principle are researched, and the mathematicalmodels of the synchronous generator under abc and dq0coordinates areestablished. The theoretical basis of the synchronous generator and networkoperation are analyzed, as well as the conditions of parallel operation. The staticstability of its grid operation and regulation of reactive power are also analyzed.2) The structure, working principle and characteristics of the brushlessexcitation system are analyzed. The mathematical model of the synchronousgenerator is established. Several available exciting systems of synchronousgenerators brushless are also introduced.3) Several brushless excitation control system for synchronous wind turbineand the methods to realize the excitation control system are respectivelyanalyzed. And by analyzing the simulation and experimental results, theadvantages and disadvantages of different excitation control strategies arepresented In practical applications, you can choose from a variety of controlstrategy according the application environment and system requirements. In practical application, appropriate synchronous brushless wind generatorexcitation control strategy could be chosen according to the concrete applicationenvironment and system requirements, to ensure smooth and efficient operationof the entire system.