Integrated Design Of Micro-nano Satellite Multi-function Power Control System

In response to the overall needs of China’s multi-tasking micro-nano satellites,the traditional power system architecture is difficult to meet the system’s scalable design requirements in terms of system configuration and energy conversion efficiency.It requires high specific power solar cell modules and structural integration technologies to create multi-tasking,The high-performance standardized and integrated micro-nano satellite power system meets the long-term development needs of China’s high-performance micro-nano satellite rapid networking.High specific power solar cell modules and structural integration technologies are the key to achieving high density of micro-nano satellite functions.The structure-integrated solar cell module based on PCB board is used to improve the micro-level by integrating a variety of sensor components in the inner layer of the substrate.The functional density of the nano-satellite power system,and using it as a micro-nano satellite structural board,to achieve multiplexing of power generation and carrying functions.This article studies the Cubesat in the micro-nano satellite.Taking the 1U Cubesat as an example,the Cubesat power system is studied to realize the integration and scalability of the power system and the solar cell array,and increase the functional density of the power system.The main research contents of the paper are as follows:Taking the 1U satellite model as an example,the integrated design of the power supply system and the solar battery array is given.Considering the structure and electrical performance requirements of the integrated PCB board,the mechanical structure of the sailboard deployment in the 1U model is designed to realize the solar battery array Extensible function,using finite element analysis software to get the mechanical simulation analysis results of the mechanical structure,put into production according to the design plan,obtained the corresponding physical object,further tested the physical object,using the spare space of the PCB board installed by the solar cell,Integrated multiple sensors,improved the utilization rate of solar panel space,and tested the electrical performance of related modules for the physical objects.The overall design realizes the integration and expandability of the power supply system.The overall structure of the power supply system is designed.The electronic components mounted in the PCB board are used to implement the control structure of the power supply system.The design of the control hardware part of the power supply system is completed.The functional modules of the power supply control system are designed.The three kinds of satellites in-orbit electricity demand proposed in the paper give the energy balance simulation results.The simulation analysis shows that the designed power system can ensure the satellites to achieve on-orbit energy balance.The overall architecture of the attitude control system is given.The solar azimuth information is given using three solar cells arrays at right angles.A variety of sensitive components such as solar sensors,magnetometers,The miniature gyroscope,in conjunction with the star sensor generally mounted on the satellite,uses the ATSUKF algorithm to design the multi-sensor joint filter for attitude determination.The MATLAB simulation results verify the information validity of the integrated design and test the integrated magnetic torque coil in the PCB board The magnetic field strength output by the two types of magnetic torque devices under various input conditions can meet the requirements of attitude control.