Title :
Analysis and experimentation of a forward converter with active clamping and output rectifier using a center tapped transformer
Author :
Maass, Gunter J. ; de Souza, Alexandre Ferrari ; Barbi, Ivo
Author_Institution :
Dept. of Electr. Eng., Univ. Fed. de Santa Catarina, Florianopolis, Brazil
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper proposes a study of a forward DC/DC power converter topology where the isolating transformer has its core reset by active voltage clamping, using a capacitor and an additional switch. This technique makes feasible the soft commutation of the two switches, allowing an increase of the commutation frequency and a volume reduction of the inductors involved. The operating principle and the small-signal characterization of the converter are presented, making it possible to foresee the clamping circuit effect in the dynamic response. Experimental results of a 550 W prototype are also presented
Keywords :
AC-DC power convertors; DC-DC power convertors; power capacitors; power transformers; rectifying circuits; switching circuits; transfer functions; 550 W; active clamping; center tapped transformer; commutation frequency; dynamic response; forward DC/DC power converter topology; isolating transformer; operating principle; output rectifier; small-signal characterization; soft commutation; Capacitors; Circuits; Clamps; Frequency; Inductors; Prototypes; Switches; Switching converters; Topology; Transformer cores;
Conference_Titel :
Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-7067-8
DOI :
10.1109/PESC.2001.954378
