THE COMPARATIVE ANALYSIS OF AC-DC BOOST PFC CONVERTER BASED ON PWM AND HYSTERESIS CURRENT CONTROL TECHNIQUES

This paper presents various current control techniques of an ac-dc boost converter to obtain nearest unity power factor (UPF). Single phase high power factor rectification is most frequently accomplished using a dual boost converter, which reshapes distorted input current waveform to approximate a sinusoidal current that is in phase with the input voltage. Several current control techniques are discussed for achieving a sinusoidal input current waveform with low distortion. Two typical techniques for power factor correction (PFC) are pulse width mode control (PWMC) and hysteresis current mode control (HCMC), both of which are evaluated based on control strategy, circuit components, and total harmonic distortion of input current. The single phase ac-dc dual boost converter is operated in continuous conduction mode (CCM). Both control techniques are simulated using Matlab/Simulink program.