Automatic Multi Mode Smart Charger With Power Supply Control To Ensure Uninterrupted Power Backup

ABSTRACT This paper deals with the design & analysis of the Microcontroller based Smart battery charger specifically designed for multimode operation to ensure no power cut. The main objective of this paper is to provide uninterrupted power supply to a load by selecting the power supply from multiple sources such as Mains, Solar Power, Battery Bank and Generator automatically on the basis of their priority. The design and performance analysis of a power factor corrected (PFC), single switch forward buck converter of proposes Smart Charger is carried out for low power battery charging applications. The battery charger main highlighting features are low cost, fast charging, high power factor, high efficiency, minimum ripple and high reliability. The converter is designed with the help of an isolated single switch forward buck converter topology operating at discontinuous mode.