Design And Construction Of Uninterruptible Power Supply (UPS)

ABSTRACT

 This project presents the design and constriction of Uninterruptible Power Supply (UPS) system with ar apparent power output of 500VA. This was achieved by tie use of the following electrical and electronic components transformer, rectifier, invert r circuit, battery, full-wave rectification, change-over circuit and filtering was implemented by the use of smoothing circuit using capacitors. I used an inverter that delivers an alternating current of 220V, 50Hz and the output voltage is made to have enough power to drive the load connected to it. The output from the inverter is synchronized in frequency and magnitude with the external power supply so that when there is power outage, take battery back-up inverter then supply power to the critical locate enduring that the power supply to the critical load is uninterrupted.