Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1997-08-12
1998-06-30
Nguyen, Matthew V.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
H02M 3335
Patent
active
057743479
ABSTRACT:
Disclosed is a compact power supply unit that prevents an electronic device from being shut down even when due to an in-rush current phenomenon the electronic device requires a supply of power that is extraordinarily greater than that which is needed for normal operation. A CV area where constant voltage feedback control is performed on an output terminal voltage until it reaches a level V.sub.1 is continued until an output current value is I.sub.1. Then, constant current feedback control is performed with the output current I.sub.1 until the output terminal voltage falls to V.sub.2 (<V.sub.1). Further, constant current feedback control is performed with the output current I.sub.2 (<I.sub.1) in the area where the output terminal voltage is lower than V.sub.2 (more specifically, in a battery charging area).
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International Business Machines - Corporation
Magistrale Anthony N.
McConnell Daniel E.
Nguyen Matthew V.
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