Four-Domain Control Strategy of Spacecraft Grid-Connected Power

As multiple spacecraft or spacecraft modules in-orbit, it is necessary to be formed into a local energy network. Due to different conditions such as light, temperature and others, it has resulted in abundant power supply for some spacecraft meanwhile insufficient power supply for others. It can be achieved that energy sharing individual spacecraft power systems. The power is supplied by a spacecraft with sufficient power to a spacecraft with insufficient power. In basis of spacecraft grid control technology research, this paper analyzes the mission characteristics of energy sharing between multi spacecraft. It is proposed that a distributed grid control method based on drop-control method. The grid domain is added on the basis of traditional three-domain control included shunting, charging, and discharging. It is achieved that long-term energy sharing of spacecraft through 4-domain control. It has the power expansion ability at the same time. The key technologies will be studied such as reconstruction technology, average flow technology and bus-voltage far-point compensation technology. It is proposed in this paper that software modeling and simulation verification of the on-grid control technology. It can provide reference for subsequent space application research.