Research On Dual Stator-winding Induction Generator System

Because of simple structure, firmness, high reliability and power density, low cost, good performance of overload and short circuit, induction machines with squirrel-cage rotor were used in all kinds of fields. But induction generators were hardly used because of their complicated control, few control methods and inadequate ideal output electric quality. With the development of power electronics technology, control theory and microprocessor technology, it is possible that induction generators generate high-quality electric energy. So, the researches on generating electricity of induction generators gradually become a pop subject in the world. In this background, this paper studies a new type of squirrel-cage induction generator system, dual stator-winding induction generator system. Firstly, the universal simulation model of dual stator-winding induction generator system is established by MATLAB. Secondly, the work principle of dual stator-winding induction generator system, the commanding principle of the system's reactive power in different work conditions, the factors of influencing two sets of stator windings' ratio of capabilities and the researches on practical application of dual stator-winding generator system are analyzed in detail. Finally, aimed at the work condition of wide rotor speed and optimization of static reactive power generator's volume, the performance of dynamic state and static state and optimal control of high-voltage DC generator system based on dual stator-winding induction generator, are studied in this paper. These researches not only achieve the work characteristic of dual stator-winding induction generator system, but also set up the foundation of optimal design of dual stator-winding induction generator and engineering realization of dual stator-winding induction generator system. Besides, high-speed and universal digital control platform based on TI's TMS320F2812 DSP, is designed and debugged. This provides hardware platform preparative for future experiments of the dual stator-winding induction generator system. In the same time, this hardware platform will update hardware facilities in our lab to improve control performance of all sorts of motors. This subject is supported by NSFC(No.50177014), ASFC(No.04F52039) and Delta education development foundation.