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

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