Many institutions have embraced the nano satellite standard as an economical means of doing space science from its inception, with the supply of electrical power to the nano satellites serving as the backbone of any such mission. This study describes the design of a solar arrays, batteries based power system that uses peak power trackers to regulate solar arrays and charge batteries. As a measure of redundancy, the peak power tracking is conducted by an active search algorithm, Perturb & Observe, in both analog and digital form. Mathematical analysis, numerical modeling, and experimental data are used to validate the suggested strategy. All of this demonstrates the correctness of the proposal, which yielded a good overall system performance

Keywords : nano; nano sattlite; Electrical power supply; maximum power point tracking; solar array