A pulsewidth modulated (PWM) full-bridge converter that simultaneously performs input power factor correction (PFC) and DC-DC conversion is proposed. The converter is the same as the standard voltage-fed PWM full-bridge converter with a diode-bridge low-pass filter front end, but with a slight modification that results in an improvement in power factor that is sufficient to satisfy the EN61000-3-2 requirements for electrical equipment. The operation of the converter is explained and analyzed, and the results of the analysis are used to determine the converter's steady-state characteristics, which are discussed in detail. A design procedure for the selection of components is then derived and demonstrated with an example. The feasibility of the converter and its ability to satisfy EN61000-3-2 requirements on electrical equipment is shown with results obtained from an experimental prototype.
PWM full-bridge converter with natural input power factor correction
IEEE Transactions on Aerospace and Electronic Systems ; 39 , 2 ; 660-674
2003-04-01
1329291 byte
Article (Journal)
Electronic Resource
English
PWM Full-Bridge Converter with Natural Input Power Factor Correction
Online Contents | 2003
|Modeling the Full-Bridge Series-Resonant Power Converter
IEEE | 1982
|