Design And Research Of Spherical Refractive Solar Photovoltaic System With Low Concentration

Energy and environmental sustainability has become one of the major issues of human concern, especially the solar photovoltaic high-profile. How to increase the maximum utilization of solar energy remains one of the heat topics. Based on improving the receiving efficiency of solar energy, a new ray-gathering photovoltaic generating system is put forward in this thesis. It has the very good sense to promote renewable energy use and development.This thesis consists of following main parts:1. The performance and technical requirements of the photovoltaic system are analyzed. A solar concentrator with the use of the spherical mirror’s refraction is designed, which can greatly improve the conventional photovoltaic cells power generation capacity.2. Solar-locating instrument in the photovoltaic generating system is designed. The solar location is calculated to obtain the best intake effect. The sun is accurately traced according to the controlling method of two axis of azimuth and elevation angle.3. Intelligent tracking control strategy for the all-weather conditions is researched. The intelligent controller determine or change the monitoring strategy through its own recognition judgment, it can achieve all-weather tracking operation and optimal control of the concentrating photovoltaic tracking system.4. The emulational experiment system of photovoltaic generation is built.The function of automatic tracking is realized.The hardware building theory and software designing method are also concluded.Simulation experiments turn out that the ray-receiver can meet the receiving request and the solar-tracking sector is able to locate the sun accurately. The whole system designing method also proves to be practical.