Charge controller of solar photo-voltaic panel fed (SPV) battery

The work presents in this paper is related to the proposal novel design and simulation of a dc to dc switching converter system suitable for charging a battery from a solar photo-voltaic (SPV) panel and a load controller circuit which is necessary to disconnect the load from the battery when the voltage of the battery falls below a certain value and to reconnect it again when battery charges. The load controller circuit disconnects the load from the battery in case the former draws higher than normal current from the battery. The charge controller section converts the varying voltage from the SPV panel to a constant voltage, current limited power to change the battery along with temperature compensation of the charging with constant voltage to ensure long life of the battery.