Excitation And Grid Of Doubly-fed Generator Based On DSP

Energy sources consuming increases continuously and environment empoison becomes serious gradually, which forces people to consider new and renewable energy development and utilization. Wind power which is no pollution energy resource is paid great attention by more and more countries. And wind power generation technology has developed greatly in recent years, and so on, the vector control technology plays an important role in wind power generation.This paper analyzes the double-fed wind turbine basic working principle and mathematical model, and it describes the working principle and topology of the double-fed generator two-level voltage dual PWM converter.lt sets up its mathematical model based on switching function, and transfers three-phase stationary coordinate system to two-phase rotating coordinate system.We group built a double-fed generator of15KW AC excitation control system platform for physics experiments, Including the IGBT power devices for the converter main circuit design and power device drive and protection circuit design based on PC923and PC929.Using TI TMS32OF2812DSP controller,this paper has designed for the dual-chip inverter control system, and its peripheral circuits. This paper has designed the AC excitation control system with Standard subroutine library of TI DSP. This paper has designed software with dular approach and finally gives the experimental analysis of the final. It gives a preliminary validation of the DSP-based doubly-fed generator stator oriented vector control strategy as a doubly-fed wind turbine AC excitation system.It shows good characteristics, and makes the conclusions of practical value.