Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-09-27
2005-09-27
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S056090
Reexamination Certificate
active
06950319
ABSTRACT:
A single-stage input-current-shaping (S2ICS) flyback converter achieves substantially reduced conduction losses in the primary side of the S2ICS flyback converter by connecting a bypass diode between the positive terminal of a full-bridge rectifier and the positive terminal of an energy-storage capacitor. An effective current interleaving between an energy-storage inductor and the bypass diode is thus obtained in the S2ICS flyback converter around the peak of the rectified line voltage, resulting in a significantly reduced input-current ripple and reduced current stress on the switch. Further, by rearranging the rectifiers in the ICS part of the S2ICS flyback converter in such a way that the energy-storage capacitor and the ICS inductor are connected to the ac line voltage through only two rectifiers, one diode forward-voltage drop is eliminated, which results in a substantially reduced conduction loss in the primary-side rectifiers.
REFERENCES:
patent: 5757626 (1998-05-01), Jovanovic et al.
patent: 5867374 (1999-02-01), Moreau
patent: 5991172 (1999-11-01), Jovanovic et al.
patent: 6005780 (1999-12-01), Hua
patent: 6088242 (2000-07-01), Koegel et al.
patent: 6239993 (2001-05-01), Fraidlin et al.
patent: 6282103 (2001-08-01), Naito et al.
patent: 6580622 (2003-06-01), Balakrishnan et al.
Chang Chien-Chung
Huber Laszlo
Jovanovic Milan M.
Delta Electronics , Inc.
Kwok Edward C.
MacPherson Kwok & Chen & Heid LLP
Nguyen Matthew V.
LandOfFree
AC/DC flyback converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with AC/DC flyback converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AC/DC flyback converter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3405751