| Energy has always been the foundation of human life,production,and social existence and development,and it supports the development of all countries in the world.In recent years,environmental problems have become more and more serious,and many problems such as the increasing shortage of energy on which human beings depend are increasingly forcing human beings to seek,develop and utilize renewable energy.Among the many renewable energy sources,solar energy has been widely developed and utilized by people due to its own advantages such as nonpolluting and inexhaustible.The traditional application of solar energy is mainly based on photovoltaic cells,but the low efficiency of photovoltaic cells to convert solar radiation to electrical energy,and the power generation efficiency is greatly affected by temperature and other factors,which greatly limit the practical application of photovoltaic cells.Therefore,improving the power generation efficiency and improving the specific application of photovoltaic cells in real life are the focus of research.The core components of the concentrating photovoltaic/thermoelectric combined power generation device based on compound paraboloid designed in this paper are composed of concentrators,photovoltaic panels and thermoelectric cells.The sunlight required for photovoltaic cells to generate electricity is collected by the concentrator,and the heat generated Supply thermoelectric battery for secondary power generation.Research and analysis on the mechanism of concentrating photovoltaic/thermoelectric combined power generation.Firstly,the model of photovoltaic cell is built with MATLAB software and its performance is simulated and analyzed,and an experimental platform for thermoelectric cell power generation is built to test the power generation performance of thermoelectric cell.Secondly,with the components of the co-generation device as the core,its structural principle,operation mechanism and heat transfer process are analyzed,and a mathematical model of the power generation system is established.According to the built model,the electrical efficiency,power and other parameters of the power generation system are calculated,and the model built by the system is solved through MATLAB.Then,use Trace Pro software to simulate,analyze and optimize the condensing effect of the concentrator,and establish the optimized parameters of the concentrator in this paper.Then,the control strategy,hardware circuit and program of the power generation control system are designed,and the improved hillclimbing method MPPT control strategy is determined by comparison.Combined with the application characteristics of the power generation device designed this time,the double Cuk circuit is used as the DC-DC conversion circuit to supply the battery to the battery.and load power supply.Finally,a concentrating photovoltaic/thermo-difference combined power generation device test platform is built and its performance is analyzed.The power generation device designed in this paper uses the solar energy in the renewable energy to generate electricity,which is in line with the development trend of energy utilization.Through the test of its performance,the results show that the combined power generation of the combined power generation device in this paper is up to 33.2W,and the power generation efficiency is up to 20.08%.Compared with the performance of simply using photovoltaic power generation or thermoelectric power generation,this structure can improve the overall power generation efficiency and increase the utilization rate of solar energy. |
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