Design of UPS for Personal Uses

Abstract

This project aims at the design of an uninterruptable power supply (UPS), specifically, a UPS designed for personal and home uses (small electrical appliances), not only to prevent the discontinuity of the electrical power to the loads connected to this UPS, but also to protect whatever loads to be connected from any unwanted disturbances on the electrical power supplying this UPS. The designing process of this UPS was conducted in several steps, firstly by designing a proper rectifying circuit (to convert the AC power to DC), secondly, choosing, charging and controlling the battery, and finally designing an inverting circuit (to convert DC to AC power). After designing the model, it was tested in a simulation program on the computer and got further improvements, and the results were discussed, also, instructions and recommendations were presented for future improvements for this UPS system.