UPS (Uninterruptible Power Supply) is considered as one of the best ways to save electrical equipment from power problems. It is an electrical apparatus that provides emergency power to a load when the input power source, typically mains power fails. At home, we need UPS when we use our PC. Other areas that need UPS are a data center, process backup, military operation, etc. There are several varieties of UPS: online UPS, offline UPS, and line-interactive UPS.
Online UPS is inverter supply directly to load; offline UPS is the inverter starts only when the utility is not present, line-interactive UPS is an offline UPS with an AVR / line conditioner. There is an inverter that converts DC current (Battery power) to AC current is called UPS inverter. IGBT rectifier technology is the latest and most effective technology in the UPS industry. It uses the high frequency to rectify the AC to DC. IGBT rectifier reduces harmonics substantially and reduces the upsize of upstream components. Hence, reduce initial cost and operation cost.
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