Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2006-03-07
2006-03-07
Laxton, Gary L (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S098000, C323S266000
Reexamination Certificate
active
07009852
ABSTRACT:
An apparatus for reducing the heat losses caused by the DC Bus capacitor current is proposed. The apparatus includes: a double frequency boost converter circuit having two boost converter circuits coupled in parallel, in which two switches, respectively disposed on the two boost converter circuits, are turned on and off alternately to produce an output current having a frequency twice that of control signals of the two switches, and to offer a DC bus respectively, a full-bridge DC-DC converter coupled to an output terminal of the double frequency boost converter circuit for transforming an output of the DC bus to a DC voltage, and a DC bus capacitor coupled to the double frequency boost converter circuit and the full-bridge DC-DC converter in parallel for balancing two corresponding transient powers of the double frequency boost converter circuit and the full-bridge DC-DC converter respectively.
REFERENCES:
patent: 5019952 (1991-05-01), Smolenski et al.
patent: 6069809 (2000-05-01), Inoshita
patent: 6898093 (2005-05-01), Ambo et al.
patent: 6949915 (2005-09-01), Stanley
Guo XingKuan
Liu Teng
Qiu Aibin
Ying Jianping
Zeng Jianhong
Delta Electronics , Inc.
Laxton Gary L
Volpe and Koenig P.C.
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