Abstract: This paper proposes a distributed & centralized system topology structure for space solar power station (SSPS), which divides the power transmission and management into three parts, i.e. solar cell array, main structure power transmission area, and transmitting antenna. According to the energy flow relationship of the three arrays of the system, this paper divides the working modes of the SSPS system into three modes, focusing on the maximum power point tracking (MPPT) working mode, tracking power command working mode, and shadow area working mode of the SSPS solar cell array, and proposes a hierarchical energy management control strategy. Finally, for the megawatt level solar arrays with different working modes, the simulation model of SSPS system is built by Matlab/simulink, and the simulation test and comparative analysis are carried out. The experimental results verify the effectiveness of the model and control strategy to solve the space solar power generation. New ideas are proposed for solving the problem of power transmission and energy management of space solar power technology.

Key words: Space solar power station, Topology architecture, Power management, Hierarchical control, MPPT control