Electric power conversion systems – Current conversion – With means to connect the input to diverse power sources
Patent
1992-07-01
1994-02-15
Stephan, Steven L.
Electric power conversion systems
Current conversion
With means to connect the input to diverse power sources
323908, H02M 719
Patent
active
052872637
ABSTRACT:
A power supply maintains a rectifier circuit in a non-doubler mode configuration when the power supply is attached to a 110-120 volt AC power source, until bulk capacitors in the rectifying circuit are charged to a combined potential of (.sqroot.2)*110-120 volts. The power supply then switches to a doubler mode configuration and the capacitors charge separately to a combined potential of (.sqroot.2)*220-240 volts. The two step charging procedure reduces the inrush current, over that developed in charging the capacitors from a zero volt potential to a combined potential of (.sqroot.2)*240 volts. It thus limits the current through a switch which configures the power supply in the doubler mode. If the power supply operates only with a 110-120 volt AC power source, which is common in high power industrial applications smaller diodes may be used in the rectifier circuitry since the inrush current is reduced. In such high power industrial applications, a reduction of the inrush currents means that fuses and circuit breakers in the power supply may be selected in accordance with the current levels associated with the steady state operation of the supply, rather than the inrush current levels.
REFERENCES:
patent: 4389702 (1983-06-01), Clemente et al.
patent: 4608500 (1986-08-01), Togawa
patent: 4665323 (1987-05-01), Russell et al.
patent: 4730122 (1988-03-01), Dreibelbis et al.
patent: 4780805 (1988-10-01), Chewuk et al.
patent: 4800329 (1989-01-01), Masaki
patent: 5097402 (1992-03-01), Kriz et al.
IBM Technical Disclosure Bulletin, vol. 31 No. 6 Nov. 1988 p. 20 (Fig. 1).
IBM Technical Disclosure Bulletin, vol. 27 No. 103 Mar. 1985 pp. 6214-6215.
IBM Technical Disclosure Bulletin, vol. 28 No. 12 May 1986 pp. 5495-5496.
Brian Long, "A New Integrated AVS Controller", Power Supply Spring/Summer 1990, pp. 38-39.
George Templeton, "RC Snubber Networks For Thyristor Power Control and Transient Suppression", Semiconductor Application Note No. AN1048, Motorola Inc., 1989, pp. 3-9.
Digital Equipment Corporation
Stephan Steven L.
LandOfFree
Inrush current control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inrush current control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inrush current control circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1212022