DocumentCode :
3394308
Title :
Power factor preregulator based on modified tapped-inductor buck converter
Author :
Spiazzi, G. ; Buso, S.
Author_Institution :
Dept. of Electron. & Inf., Padova Univ., Italy
Volume :
2
fYear :
1998
fDate :
1-3 Dec. 1998
Firstpage :
873
Abstract :
Power factor preregulators based on buck-type converters with capacitive output filter do not allow a unity power factor due to their inability to draw current from the AC line during those intervals when the input voltage is lower than the output one. This limitation can be overcome by using a modified tapped-inductor buck topology, which can be arranged to operate as a flyback converter when desired. This modification, which requires only an extra line-frequency commutated switch and a diode, allows to extend the input current conduction angle, thus making the converter compliant with harmonic standards like IEC 1000-3-2. A 1 kW converter has been designed, built and tested to validate the theoretical forecasts.
Keywords :
IEC standards; commutation; inductors; power capacitors; power conversion harmonics; power factor; 1 kW; capacitive output filter; current conduction angle; flyback converter; line-frequency commutated switch; modified tapped-inductor buck converter; power factor preregulator; unity power factor; Buck converters; Diodes; IEC standards; Power harmonic filters; Reactive power; Switches; Switching converters; Testing; Topology; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronic Drives and Energy Systems for Industrial Growth, 1998. Proceedings. 1998 International Conference on
Print_ISBN :
0-7803-4879-6
Type :
conf
DOI :
10.1109/PEDES.1998.1330716
Filename :
1330716
Link To Document :
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