Research On Small Wind And Solar Hybrid Generation System Based On Polar Ice Material Balance Monitoring Station

The project is the application of the small wind and solar power supply system for the polar ice material balance monitoring station in the Antarctic environment.The project is subsidized by the Twelfth Five-Year Project under the project of "The comprehensive survey and evaluation of the Antarctic and Arctic environment".(No.CHINAER 2015-02-02)The Antarctic ice sheet regulates the global heat balance.As the global warming,the Antarctic ice sheet is accelerating to melt.Therefore,the study of the relationship between climate and ice sheet material balance is very important.The polar ice material balance monitoring station is a multi-function monitoring station for collecting and transmitting ice sheet material balance information in the Antarctic region.Due to the low temperature and harsh environment,the monitoring station power supply life is not long and many scientific data lost.In this paper,the power supply system of polar ice material balance monitoring station is taken as the research target.Considering the special environment in the Antarctic,the small wind and solar power supply system of the polar ice material balance monitoring station is studied.First of all,we select the hardware for system to ensure that the hardware can work properly at the low temperature.Based on the climatic data of the Antarctic installation site,the capacity of the selected model is calculated.The results show that the selected model can meet the system requirements.Secondly,we conduct the discharge experiment of the selected battery in different low temperature environment to explore the battery performance changes at low temperature.The results show that as the temperature decreases,the capacity of the battery will be reduced,the lower the temperature,the less the amount of electricity released.We conduct the charge experiment at the low temperature.The experimental data show that the battery can reduce the capacity of the current as the temperature decreases.When the ambient temperature is-10? above,the battery can accept large current.When the ambient temperature down to-20? below,we should use a small current to charge,the battery can charge more power.Thirdly,in order to charge more power for battery at minus 10 degrees Celsius,the maximum power tracking control strategy of wind energy and solar energy is put forward respectively.The selected control strategy is simulated by MATLAB.The results show that the selected strategy can meet the demand.Then,based on the battery experiment at low temperature,the charging control strategy of the battery under the low temperature is proposed,which combines the wind energy and solar energy control strategy and the special environment of the Antarctic.Finally,the MSP430 single-chip microcomputer is used as the core of the wind and solar hybrid controller for the design of the hardware circuit,the selected devices are able to meet the requirements of low temperature environment,and its main program is designed.We verify its function in the laboratory.Subsequently,power supply system follows the Antarctic 33 rd scientific expedition team,conducted the field experiment,the results show that the design of wind and solar power supply controller can meet the demand,and the polar ice material balance monitoring station can work properly.