单板纳星电源系统能量平衡仿真

能量平衡是微纳卫星电源系统设计和考核的重要要求,在地面通常通过数值仿真进行评价。介绍单板纳星电源系统结构和特点;分别对太阳电池阵、蓄电池组和卫星负载进行数学建模;结合卫星姿态动力学进行能量平衡仿真,仿真结果可以实时反映卫星的功率变化、电池容量和能量平衡情况。电源系统在轨试验数据与仿真结果基本一致,证明所建模型是正确的,仿真方法有效。

Energy balance simulation of board nano-satellite power system

Energy balance is the basic requirement in designing the power system of nano-satellite, and which is examined by numerical simulation on ground. Simulation on the energy balance of power system of the board nano-satellite was studied in this paper. The architecture and feature of the board nano-satellite power system was introduced first. Then the solar array, Li-ion battery and load models were developed respectively. At last, combined with the dynamic simulation of the satellite posture, the energy balance was simulated. The simulation result can reflect the power change, battery capacity and state of energy balance. The results of simulation and experiment show that the satellite can realize energy balance and simulation method studied in this paper is feasible.