ABSTRACT
Uninterruptible power supply (UPS) systems provide reliable, and high-quality power for vital loads. In fact, they protect sensitive loads against power outages as well as over-voltage and under-voltage conditions. UPS systems also suppress line transients and harmonic disturbances. Applications of UPS systems include medical facilities, life supporting systems, data storage and computer systems, emergency equipment, telecommunications, industrial processing, and on-line management systems [1]–[3].
