Abstract

Pakistan’s Energy infrastructure is not well developed, rather it is considered to be underdeveloped and poorly managed. Currently the country is facing severe energy crisis. Despite of strong economic growth and rising energy demand during past decade, no serious efforts have been made to install new capacity of generation. The use of various power sources like generators, UPS, solar system with DC power lines and DC loads as well as with UPSs for their requirements is most common in the country. Nowadays the most common system is DC loads with batteries and solar chargers. The basic drawback of DC system is the voltage regulation for DC home appliances, whenever batteries are fully charged the light intensity of lamps and speed of fans increased and may also damage appliance. While decrease in battery decreased the light intensity of lamps and speed of fans. For this problem a system automatic voltage regulator for DC appliance based on Arduino has been made. It is based on buck boost converter technology, when battery fully charged this does not allow excessive voltage to loads and maintain the desired voltage, when voltage of battery decreased the system increases the voltage to desired level.

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