Non-imaging Space Solar Concentrator And Performance Researc

The application of concentrating photovoltaic technology in satellite power generation system can significantly improve the comprehensive performance of satellite system and enhance the economic benefit of satellite.Therefore,in this paper,theoretical,experimental and numerical studies are carried out on the Satellite system of SSW-CPC(Satellite Solar Wing CPC,SSW-CPC)coupled satellite solar wing,Firstly,a mathematical model of SSW-CPC was constructed according to the operating characteristics of space satellites and the uneven energy distribution of S-CPC(Standard CPC,S-CPC).The comprehensive performance of the constructed model was verified by visual laser experiments and simulation,The comprehensive performance of the constructed SSW-CPC was verified by visual laser experiments and simulation.Then the SSW-CPC is coupled to the satellite solar wing and the relevant satellite motion model is constructed,and the theoretical solution is obtained through C language simulation.In addition,the power generation performance of the satellite system of the SSW-CPC coupled satellite solar wing is verified by the constructed outdoor experiment device.Finally,the experimental and simulation solutions of the satellite system of the SSW-CPC coupled satellite solar wing are analyzed and their economic characteristics are evaluated.The specific research contents are as follows:(1)The mathematical model of SSW-CPC was constructed by physical model method,and the concentrating characteristics of SSW-CPC were explained based on optical principle.The reliability of laser experiment and the concentrating characteristics of SSW-CPC were proved to be feasible,stable and intuitive by the data measured by several visual laser experiments,The acceptance half-angle affects the optical performance of SSW-CPC.In terms of optical efficiency,the incidence angle of SSW-CPC is within the range of the maximum optical efficiency maintaining angle,and its optical efficiency is the highest and higher than that of S-CPC.It is also found that the smaller the acceptance half-angle is,the greater the ratio of the maximum optical efficiency maintaining angle to the acceptance half-angle is,in terms of energy flux distribution,the energy flux distribution on the surface of the absorber has a good uniformity,and its energy distribution gradient fluctuation is small.Compared with SCPC,it is found that the energy value is small and the energy distribution is relatively uniform,which is more beneficial to the long-term work of the system.Moreover,the actual satellite tracking system can also meet the tracking error requirement.In terms of production cost,the larger the acceptance half-angle of SSW-CPC,the higher the height of SSW-CPC surface structure,which leads to the increase of consumables on the spotlighting surface,thus increasing its production cost.(2)Combined with the experimental platform and program simulation,the power generation performance of the satellite system of the SSW-CPC coupled satellite solar wing is verified.The experimental results show that the average value of the maximum power output of the satellite solar wing coupled with the SSW-CPC coupled satellite solar wing is 1.58 W,and that of the conventional satellite solar wing is 1.27 W,which is increased by 24.4%,the simulation results show that the maximum generating power of the coupled SSW-CPC satellite solar wing is 6444 W,and the average of the conventional satellite solar wing is 5188 W.Compared with the conventional satellite solar wing,the power of the coupled SSW-CPC solar wing directly increases 1256 W,which proves that the simulated value is consistent with the experimental value.(3)Further economic evaluation of the satellite system of the SSW-CPC coupled satellite solar wing is carried out through simulation calculation.It is found that the annual energy generation of the coupled SSW-CPC solar wing is increased by 12.0%compared with that of the conventional satellite solar wing,satellite mass reduced by5.3%,the launch cost is reduced by ￥134,264,270.The economic evaluation results show that the satellite system coupled with SSW-CPC solar wing can not only improve the solar wing power generation,but also reduce the total mass and launch cost of the satellite,which has certain application potential.