Paper Title
Power Factor Correction And Efficiency Improvement Of A Single Phase Ac/Dc Converter With Enabling Window Control
Abstract
New recommendations and feature standards have increased the interest in power factor correction circuits to get
sinusoidal line current. The analysis of the major-component ratings of the continuous current mode (CCM) single-stage
power factor-correction (PFC) and the CCM boost two-stage PFC converters is given. High-performance regulation with
satisfactory line-current harmonics is demonstrated with conventional duty -ratio control. Zero voltage switching, zero
current switching, active snubber approaches employed to reduce the reverse recovery losses. By using line frequency
commutated techniques and enabling window control Electromagnetic interference noise (EMI) is reduced and soft
switching is obtained by reducing driving losses. By using asymmetrical pulse width modulation techniques the total
harmonic distortions are reduced to less than 3.8% and the efficiency can be obtained above 96.5% with the network. Cool
MOSFETs and SiC diode used to reach the desired efficiency with competitive price. This method is verified by
experimental results obtained from a 500W prototype.