Title :
PWM full-bridge converter with natural input power factor correction
Author :
Moschopoulos, Gerry ; Qiu, Mei ; Pinheiro, Humberto ; Jain, Praveen
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, Ont., Canada
fDate :
4/1/2003 12:00:00 AM
Abstract :
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.
Keywords :
DC-DC power convertors; PWM power convertors; bridge circuits; low-pass filters; power factor correction; standards; switching convertors; DC-DC conversion; EN61000-3-2 requirements; component selection design procedures; converter input power factor correction; converter steady-state characteristics; diode-bridge low-pass filter front ends; pulsewidth modulated full-bridge converters; voltage-fed PWM full-bridge converters; DC-DC power converters; Diodes; Low pass filters; Power factor correction; Prototypes; Pulse width modulation; Pulse width modulation converters; Reactive power; Steady-state; Voltage;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
DOI :
10.1109/TAES.2003.1207273
