DESIGN & SIMULATION OF ACTIVE POWER FACTOR CONTROLLER USING BOOST CONVERTER

Currently extensive use of power electronic devices has made power management smart,flexible and efficient. But the increase in number of power electronic devices has also led to increase in distortion and power pollution in the distribution netwo rks. This is due to injection of current and voltage harmonics into the networks which leads to reduction of power factor and negative impact on electrical equipment. So the need of power factor improvement along with the reduction in Total Harmonic Distor tion (THD) has now gained prime importance. This paper discusses an approach for the power factor improvement using an Active Power Factor Correction (APFC) technique. It uses multiplier logic to obtain current wave shaping which allows source current to f ollow sinusoidal voltage. It improves power factor (PF),reduces harmonics distortion noticeably and automatically corrects the distorted line current in the presence of nonlinear load. The work includes THD reduction and improvement of power factor at in put side in the presence of nonlinearities produced by rectifier,UPS,telecom supplies,electronic ballast etc. It is an effort to explain design and simulation of boost converter operating in continuous conduction mode (CCM) as a power factor correction controller. Comprehensive study of boost power factor controller is carried out. Simulation model of the system is developed in MATLAB to analyze variations in THD and power factor.

https://www.ijiert.org/paper-details?paper_id=140737