Research On Improving The Efficiency Of Concentrated Solar Photovoltaic Power Generation

With the continuous development of science and technology, human life on earth is facing a serious threat of various energy exhausted, vigorously develop new energy and renewable energy has become the main task and strategic objective of China in twentyfirst Century the development of the national economy and building the welloff society in crunch time. Solar energy is the new energy meet human needs.However, due to the uneven distribution of time, solar radiation will be with sunshine azimuth and weather changes, therefore, how to make use of solar energy resources effectively has become our top priority is to solve the problem, which is now a lot of solar energy equipment for the utilization of solar energy is not high.As the energy density low, energy dispersion of solar energy, in order to improve the output power of photovoltaic cells per unit area, the gathering method, the photovoltaic battery working at times even hundreds times light conditions, and thus to reduce the cost of photovoltaic power generation has a good application prospect.But in concentration, with the power generating efficiency temperature of photovoltaic cells will reduce. If the fluid cooling of photovoltaic cells, in reducing the battery temperature, thermal energy is obtained at the same time, improve the power generation efficiency, achieving efficient utilization of solar energy. In order to solve the solar energy utilization is not high, this paper introduces a design scheme using the solar concentrating photovoltaic tracking system.According to the principle of concentrating photovoltaic power generation, analysis of the parabolic focusing power advantage, choose the automatic tracking system suitable and discusses the design method, the design of the parabolic reflector automatic focusing control circuit. In order to improve the heat transfer efficiency, the efficiency of air cooling mode by indirect heat exchange to achieve thermal conversion is low, and large volume, inconvenient installation. This paper presents a direct conduction by hot way to achieve cooling, the cooling method is more convenient, and has the advantages of small size, high efficiency, convenient installation. Concentrating photovoltaic generating the design of automatic tracking and heat radiator system, mechanical structure is simple and compact, easy installation, good tracking effect and stable operation, can be widely applied to the grid and off grid photovoltaic power generation system.