The Research Of Stand-alone Small Scale Wind Power Generator And It's Controller

The Wind power, Solar energy and Hydropower are all called Green Energies. They have the advantages of non-pollution, abundant reserves and could be used widely. But, the wind power has more randomicity and uncertainty compared with other kinds of Green Energies. The quality of power, which is generated by the wind power generators, will be affected greatly due to the randomicity, when the wind power generation system is working. And, if the load changes momentarily, it will be more difficult to control the whole generation system, so, we could conclude that it's harder to make use of the wind power than the other two kinds of Green Energies.An overall and thorough study on the Stand-alone small scale wind power generating systems is given in this paper. The descriptions of the control technology of the wind power generating system and the introductions of the development situations of the wind power generation system in China are given in the chapter one. The chapter two discusses the composition and operation principle and the functions of each part of the stand-alone small scale wind power generating systems. In the chapter three, the optimal operation principle of the wind power generator is described. The technology of Maximum Power Point Tracking (MPPT) is studied from the two sides of the Wind-turbine and the Generator. A theory of Wind Power MPPT, which is based on the Boost Circuitry, is deduced in paper. And at last, a new-model of the wind power generator is proposed. The detailed introduction of the controller, which was designed by author, is given in the chapter four, including the general design, the hardware circuits and the code implementing. The last chapter summarizes the research results in this paper and the author's opinions on the small scare wind power generating system.