31-08-2017, 12:11 PM
The automatic power factor controller design is designed to automatically improve the power factor when the power factor falls below a certain level. As you know, the demand for electric power is increasing day by day. More and more inductive loads are being used in industrial and domestic applications. Inductive loads are the main reason for the low power factor in the power system. Therefore, we need to develop a method to improve power factor automatically. The automatic power controller project provides a solution to this problem. The low power factor includes an unnecessary load on the power system and transmission lines. By improving the power factor of the power system automatically, the efficiency of the power system can be improved. In this project, the power factor correction prototype is developed using pic microcontroller, relays, potential transformer, current transformer and zero crossing circuit.
The power factor is a relationship between actual power and apparent power. The ideal power factor is unity. Pure resistive loads have unit power factor. But there is no such burden. So we always try to bring the power factor closer to the unit. the reactive power is also the ratio of low power factor. Inductive loads absorb reactive power and capacitive loads provide reactive power. Therefore, banks of capacitors are used to improve the power factor in the power factor correction circuit. By connecting the parallel capacitor banks to the load, the power factor increases. the capacitor provides reactive power locally to the load instead of getting from generators or power system which in turn induces charge on power system. This is the main purpose of the automatic power factor controller.
The power factor is a relationship between actual power and apparent power. The ideal power factor is unity. Pure resistive loads have unit power factor. But there is no such burden. So we always try to bring the power factor closer to the unit. the reactive power is also the ratio of low power factor. Inductive loads absorb reactive power and capacitive loads provide reactive power. Therefore, banks of capacitors are used to improve the power factor in the power factor correction circuit. By connecting the parallel capacitor banks to the load, the power factor increases. the capacitor provides reactive power locally to the load instead of getting from generators or power system which in turn induces charge on power system. This is the main purpose of the automatic power factor controller.