Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-08-10
2009-02-17
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S056090
Reexamination Certificate
active
07492614
ABSTRACT:
There are included an actuation unit supplying an actuation power to a control unit to start a switching operation of a switching element when an alternating-current power sources turned on, and stopping supply of the actuation power to the control unit after the switching operation of the switching element is started; an overheat detection unit being thermally coupled with the actuation unit and detecting an abnormal condition due to overheating of the actuation unit; a latch maintaining an inoperative state of the switching element at the event of an abnormal condition other than the abnormal condition due to overheating of the actuation unit; and an actuation controller configured to discharge an electrical charge of a smoothing capacitor while the latch maintains the inoperative state of the switching operation to speedily reset the latch unit when the alternating-current power source is turned off, and to stop the actuation unit in response to a detection signal from the overheat detection unit.
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Furukoshi Ryuichi
Iwabuchi Akio
Berhane Adolf
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sanken Electric Co. Ltd.
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