Hybrid Battery Charging System Using Utility Grid

In this paper design of hybrid battery charging system and the implementation of the system has been described. Charging the battery using the solar and utility grid has been explained in this paper. A microcontroller has been programmed to control the relay. An algorithm is programmed in such a way that it detects the voltage at the terminals of battery and allows the relay to operate. As the microcontroller senses the battery voltage it sends the suitable commands to relay that control the utility grid supply. Depending on the availability of the utility grid supply UPS (Uninterrupted Power Supply) connects or disconnects through which the battery gets charged. The system has been designed in such a way that perfectly suits Indian scenario where there is sporadic power supply. The proposed system is implemented for a double battery system.