Design Of Portable Concentrating Photovoltaic-thermoelectric Co-generation System

In recent years,the world is under the threat of resource crisis and the severe form of harsh environment.Through the research in recent years,China is becoming more and more mature in its use of renewable energy developments.Currently,the most independent power generation system is photovoltaic power generation,but it is relatively environmentally dependent and it is difficult to ensure the reliability of the power source.In addition,the power generation system with large power generation is large in volume,not easy to carry,difficult to install,and the power generation system with good portability is not high,can not maintain normal power consumption,it is difficult to solve the power supply problem that needs to be changed frequently.In order to solve the above problems,meet the energy reliability and mobility of the power generation system,this paper designs a portable concentrating solar power hybrid power system-temperature difference.First of all,the energy transfer model of the portable concentrating photovoltaicthermoelectric power generation system is established,and according to the analysis of the power generation principle,the concentrating photovoltaic cell and the thermoelectric cell are modeled and simulated by MATLAB software,and the simulated output curve is calculated,analysis.Next,the structure of the portable concentrating photovoltaic-thermoelectric power generation system is designed and studied.The concentrating photovoltaic power generation part adopts a concentrating structure composed of a 500-fold concentrating fresnel lens and a gallium arsenide cell,and the thermoelectric power generation part adopts the model of For the thermoelectric cell of TEC1-33506 SR,the residual heat on the lower surface of the photovoltaic cell provides thermal energy for the hot end of the thermometer,and a watercooled heat dissipation system is used as the heat dissipation method of the portable concentrated photovoltaic-thermoelectric power generation system.The junction and air cooling and water cooling two heat dissipation methods are simulated and analyzed.Then the design and research of the control part of the portable concentrating photovoltaic-thermostatic combined power generation system is carried out.The fuzzy logic control method is selected to track the maximum power point,and the dual-input Buck circuit is used to control the MPPT.Finally,an experimental platform is built according to the requirements of a portable concentrating photovoltaic-thermothermal combined power generation system,and the PVsyst software is used to calculate the variation range of the sun’s angle and track it manually.The experimental conclusions are consistent.The results show that the portable concentrated photovoltaic-temperature difference combined power generation system meets the requirements of portability and reliability.The total mass of the device is about 2kg,which can be stored in a storage box of400mm×300mm×300mm.And according to the experiment,the experimental output maximum power of the two independent power generation systems of concentrating photovoltaic and temperature difference and the combined power generation system are 39.5W,9.8W,and 48.7W,respectively.It can realize the uninterrupted power supply under the sun,and finally proves that the portable concentrating photovoltaic and temperature difference combined power generation system is portable and reliable.The system can not only meet the daily electricity demand,but also can be stored for backup,which can meet the electricity generation and reduce the cost,which is feasible.