n Journal of Emerging Trends in Engineering and Applied Sciences - Implementation of intelligent - based uninterrupted power supply and management control system (UPSMCS) for spacecraft

Volume 6, Issue 1
  • ISSN : 2141-7016
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The need for reliable and un-interrupted Electrical Power Supply is Primary for spacecraft operations i.e. for satellites to navigate their orbits and achieve their varied mission objectives. The satellites Electrical Power Subsystem (EPS) generates, stores, conditions, control and distributes power for satellites housekeeping operations. The paper is ostensibly aimed at implementing an Intelligent-based Un-Interrupted Power (UPSMCS) for application in the stable coordination of power supply, power saving, load switching and battery temperature control in the EPS of a satellite. The application program implemented here as intelligent function to develop UPSMCS is VISUAL BASIC programming language to be implemented in INTEL 886 microcontroller (Toshiba) for software-based intelligence. Moreover, assembly language subroutine programming was considered to achieve a simulation model for virtual test for systems reliability and efficiency. The UPSMCS provided intelligence for real time stable power supply. It managed power load shedding and power cycling and actuated fault protection mechanism during eclipse and sunlight orbit periods. The UPSMCS monitored the solar source outputs to determine orbit periods. The monitored battery charge and discharge processes to determine threshold levels for battery state of charge (SOC) and depth of discharge (DOD) and actuated suitable battery charge rate regime for reliable system performance. The UPSMCS also monitored the battery temperature threshold levels to control destructive exothermic reaction. This enhances the service delivery of the battery and consequently prolong its lifespan.

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