Solar Thermoelectric Power Generator And The Electricity Power Prediction Method

The power generation technology utilizing the temperature difference of solar thermal is a new direction of green energy development.It convert the solar thermal energy to electricity power through some special device,and provide power for the small electrical equipment.In this paper,a non-tracking solar thermal thermoelectric generator is designed with a combination of Fresnel lens and thermoelectric power generation technology.This device,with the Fresnel lens as the hot junction,and with the radiator as cold junction,can realize a high efficiency of thermoelectric conversion.The main contents of the study include the following aspects:Firstly,the experimental platform was set up,the performance of some commercial temperature-difference power generation was tested,and some key factors,which directly influence the performance of power generation,were determined.Through these experiments we find the effective method to improve the power generation efficiency and the output power.In addition,the output characteristics of multiple thermoelectric power generation chips in series parallel connection are studied.Secondly,in order to improve the power conversion efficiency of the power generation utilizing the solar thermal,and with the help of the TracePro soft,a special device,which is made up of some thermoelectric generators,is designed.The surface profile of this new device and the distance between the Fresnel lens and thermoelectric power generation is optimized designed,which can keep the focused solar spot falls on the hot junction of temperature-difference power generator,its one side simultaneously coated with the absorbing material.Finally,the PSO-BP neural network method is applied to predict the generating voltage of power generator utilizing the temperature difference of solar thermal.A comparison between the predicted voltage and the experimental data showed this method is correct.