Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-01-17
2006-01-17
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S056010
Reexamination Certificate
active
06987675
ABSTRACT:
A soft-switched boost converter includes an active snubber to provide soft switching of all semiconductor components. Specifically, the current (“turn-off current”) in the rectifier is switched off at a controlled rate, the main switch is closed under zero-voltage switching (ZVS) condition, and the auxiliary switch in the active snubber is opened under zero-current switching (ZCS) condition. As a result, switching losses are reduced with beneficial effects on conversion efficiency and EMC performance.
REFERENCES:
patent: 6051961 (2000-04-01), Jang et al.
patent: 6246599 (2001-06-01), Jang et al.
patent: 6906930 (2005-06-01), Jang et al.
patent: 102004022136 (2004-12-01), None
Chang Yu-ming
Fang Kung-Hui
Jang Yungtaek
Jovanovic Milan M.
Berhane Adolf
Delta Electronics , Inc.
Kwok Edward C.
MacPherson Kwok & Chen & Heid LLP
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