Electric power conversion systems – Current conversion – Having plural converters for single conversion
Reexamination Certificate
2007-05-02
2008-12-30
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Having plural converters for single conversion
Reexamination Certificate
active
07471528
ABSTRACT:
A multiplicity of synchronized inverters for driving a multiplicity of loads such as CCFLs that require high ac voltages are arranged in close proximity of the respective loads and controlled in phase. A frequency determination capacitor and a frequency determination resistor are connected to one of the inverters to generate a triangular wave signal and a clock signal. The triangular wave signal and clock signal thus generated are supplied to other inverters to synchronize all the loads so that they can be controlled in phase. The resistance of the frequency determination resistor is set to a substantially small magnitude at the time of startup to increase the frequency of the triangular wave signal, thereby enabling quick startup of the loads.
REFERENCES:
patent: 5193054 (1993-03-01), Galloway et al.
patent: 5257180 (1993-10-01), Sashida et al.
patent: 5434771 (1995-07-01), Danby et al.
patent: 5473528 (1995-12-01), Hirata et al.
patent: 5640313 (1997-06-01), Takehara et al.
patent: 5677617 (1997-10-01), Tokai et al.
patent: 6134123 (2000-10-01), Yamada
patent: 6259615 (2001-07-01), Lin
patent: 6381157 (2002-04-01), Jensen
patent: 6396170 (2002-05-01), Laufenberg et al.
patent: 6396722 (2002-05-01), Lin
patent: 6778412 (2004-08-01), Nagai et al.
patent: 6982886 (2006-01-01), Fukumoto
patent: 6982889 (2006-01-01), Fukumoto
patent: 7046526 (2006-05-01), Toda et al.
patent: 7095635 (2006-08-01), Fukumoto
patent: 7099168 (2006-08-01), Fukumoto
patent: 7126831 (2006-10-01), Toda et al.
patent: 7202637 (2007-04-01), Green et al.
patent: 7233509 (2007-06-01), Fukumoto
patent: 7236375 (2007-06-01), Fukumoto et al.
patent: 5-80191 (1993-10-01), None
patent: 8-111290 (1996-04-01), None
patent: 10-050489 (1998-02-01), None
patent: 2000-306692 (2000-11-01), None
patent: 2001-110582 (2001-04-01), None
patent: 2002-43088 (2002-02-01), None
patent: 478240 (2002-03-01), None
Berhane Adolf
Hogan & Hartson LLP
Rohm & Co., Ltd.
LandOfFree
Parallel operating system of DC-AC converters and controller... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Parallel operating system of DC-AC converters and controller..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Parallel operating system of DC-AC converters and controller... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4028895