Power converter

Electrical transmission or interconnection systems – Plural load circuit systems – Transformer connections

Reexamination Certificate

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Details

C307S082000, C307S083000, C361S035000, C361S036000, C361S038000, C361S067000, C323S271000, C323S272000, C323S275000, C323S276000, C363S025000, C363S039000

Reexamination Certificate

active

10544126

ABSTRACT:
A power converter that can continue to operate after suffering a partial failure. The power converter includes multiple array transformers; normally-on switches connected respectively in series with the ends of each of the primary windings of the array transformers; normally-off current bypass devices connected in parallel with the series connections of the primary windings of the array transformers and the switches at the transformer ends; AC-DC converter units having AC sides respectively connected secondary windings of the array transformers; and mutually independent DC circuits respectively connected to DC sides of the AC-DC converter units. By turning on the current bypass device of the primary winding of a specified array transformer and turning off the switches at the ends of that primary winding, it is possible to isolate the specified array transformer and the AC-DC converter unit connected to it.

REFERENCES:
patent: 2394126 (1946-02-01), Warrington
patent: 4922364 (1990-05-01), Paulsson
patent: 5206775 (1993-04-01), Wilson
patent: 5646511 (1997-07-01), Akamatsu et al.
patent: 5815387 (1998-09-01), Aritsuka
patent: 5986909 (1999-11-01), Hammond et al.
patent: 6075349 (2000-06-01), Okayama
patent: 7154722 (2006-12-01), Stoupis et al.
patent: 5-130750 (1993-05-01), None
patent: 10-28319 (1998-01-01), None

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