Power Factor Improvement of Nonlinear Load Using Boost Converter with Average Current Control

Abstract

Now a days, development of industrial application is increases and electrical energy is always in great demand. To meet the demand, we have to improve the quality of power i.e. to improve the power factor of electrical load. Generally, nonlinear load is reason of poor power factor and that effects on conductor losses, voltage regulation, cost and rating of machine. Nonlinear loads are the main source of harmonics which increases Total Harmonic Distortion (THD) in distribution system and results in poor power factor. Conventionally, in full-bridge diode rectifier, large value capacitors are used to get purer DC output. But the use of large value Capacitor introduces current harmonics in supply side. In this type of nonlinear loads, boost converter with average current control strategy is useful. In this paper, simulation results of boost converter with average current control strategy, to reduce harmonics in non-linear load, are presented. The full bridge rectifier with large value capacitor is considered as non-linear load. Results shows that use of boost converter with average current control strategy improves supply side power factor considerably. Also, supply side harmonics are reduced.