Research On Switched Reluctance Generator System

As the representative of modern electrical machines, switched reluctance machine combines the electrical machine theories with the modern power electronics technique and the advanced microprocessor control technique, which not only has low-cost strong structure, good fault-tolerant and heat-resistant capability but also has excellent controllability. Thus, switched reluctance machine as motor is widely used in drive and speed regulation field. In these ten years, more and more attention is also paid to its application in generation field, which interests many specialists and scholars.This paper mainly focuses on the application of switched reluctance generator in wind generation, and has done some further theoretic research as well as experimental research.Firstly, this paper summarized and analyzed the present and the prospective of wind generation and relative techniques based on a large number of referenced materials, presented the several advantages of SRG wind generation system, further made the significance of developing this kind of system clear.Secondly, how switched reluctance generator works and how to control it are explained from a new view, which separated the switched reluctance generator from switched reluctance motor and clarified the performance characters of SRG. This part also pointed out that SRG has two operation modes. One is self-excitation mode, and the other is independent-excitation mode.Thirdly, a mathematical model of SRG inductance was produced. The computation results can fit the experimental data well.Fourthly, in this chapter, the linear and nonlinear mathematic models of SRG were discussed in details. Simulation of SRG using MATLAB software and a series of qualitative analysis were conducted. Some instructive theoretic conclusions were drawn from the above work.Fifthly, a set of practical SRG system is developed, which based on DSP control technique and power electronics converting technique. The reasonable design of this system fully displayed the flexibility of SRG control.Finally, experiments have been done on this practical system. The experimental results validated and deepened the conclusions drawn from theoretical research. The compare between the results from experiments and simulation also testified the practicability of the mathematical models presented in this paper.