One of the most critical systems of any satellite is the Electrical Power System
(EPS) and without any available energy, the satellite would simply stop to function. Therefore, the presented research within this paper investigates the areas relating to the satellite
EPS with the main focus towards the CubeSat platform. In this paper, an appropriate EPS architecture with the suitable control policy for CubeSat missions is proposed. The suggested
control strategy combines two methods, the Maximum Power Point Tracking (MPPT) and
the Battery Charge Regulation (BCR), in one power converter circuit, in order to extract
the maximum power of the Photovoltaic (PV) system and regulate the battery voltage from
overcharging. This proposed combined control technique is using a Fuzzy Logic Control
(FLC) strategy serving two main purposes, the MPPT and BCR. Without an additional
battery charger circuit and without switching technique between the two controllers, there
are no switching losses and the efficiency of the charging characteristic can be increased
by selecting this proposed combined FLC. By testing a space-based PV model with the
proposed EPS architecture, some simulation results are compared to demonstrate the superiority of the proposed control strategy over the conventional strategies such as Perturb and
Observe (P&O) and FLC with a Proportional Integral Derivative (PID) controller.
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