《BASICS OF UPS - seminar presentation》.pdf

Seminar by: S.Murali krishnan 5050910061-B Tech EEE, SRM University, Chennai What is UPS? UPS – Uninterruptible Power Supply is a standby electrical Power source connected between the Power Utility and the load. • Modern Electronic gadgets and computer • Modern Electronic gadgets and computer systems are highly sensitive to the power systems are highly sensitive to the power fluctuations fluctuations • Disruption of power may lead to Data loss/ • Disruption of power may lead to Data loss/ corruption/ malfunction etc. corruption/ malfunction etc. • Standby Power Sources - Generators • Standby Power Sources - Generators • Starting the generator takes a few minutes. • Starting the generator takes a few minutes. UPS is mainly used as a Power Backup for UPS is mainly used as a Power Backup for the above few minutes the above few minutes • UPS maintains power instantaneously by • UPS maintains power instantaneously by switching to battery in the event of a power failure switching to battery in the event of a power failure or a dip (brown out) or a dip (brown out) • Used to condition the power supply by reducing • Used to condition the power supply by reducing spikes and harmonics. spikes and harmonics. • Designed to correct a variety of power problems - • Designed to correct a variety of power problems - - Sags – Transient Under voltage - Sags – Transient Under voltage - Surge – Short duration high voltage - Surge – Short duration high voltage - Brownouts – Low voltage for long time - Brownouts – Low voltage for long time - Spikes – Brief but high energy bursts - Spikes – Brief but high energy bursts - Line noise, frequency variation, switching - Line noise, frequency variation, switching transient and Harmonic distortion transient and Harmonic distortion Three types of UPS 1. Offline UP