Abstract

This paper is designed to reduce the power loss in industries by power factor compensation through a number of\nshunt capacitors. This results in reduction in amount of electrical bill for industries and commercial establishments. Power\nfactor is defined as the ratio of real power to apparent power. Reactive power is the non working power generated by the\nmagnetic and inductive loads, to generate magnetic flux. The increase in reactive power increases the apparent power, so the\npower factor also decreases. Having low power factor, the industry needs more energy to meet its demand, so the efficiency\ndecreases. In this proposed system the time lag between the zero voltage pulse and zero current pulse duly generated by\nsuitable operational amplifier circuits in comparator mode are fed to two interrupt pins of the microcontroller.\nMicrocontroller displays the power loss due to the inductive load on the LCD. The program takes over to actuate appropriate\nnumber of relays at its output to bring shunt capacitors into the load circuit to get zero power loss. In this paper, the 8 bit\nmicrocontroller used which belongs to 8051 family.