Electric power conversion systems – Current conversion – Having plural converters for single conversion
Reexamination Certificate
2008-02-01
2008-11-04
Laxton, Gary L (Department: 2838)
Electric power conversion systems
Current conversion
Having plural converters for single conversion
C323S362000, C336S170000, C336S184000
Reexamination Certificate
active
07447050
ABSTRACT:
The present disclosure is concerned with a multilevel converter including a transformer arrangement comprising at least two transformer units, each with primary and secondary windings and a transformer core structure. The latter are merged into one shared transformer core comprising at least one return limb that is part of the closed magnetic flux paths of the at least two transformer units. Sharing return limbs among individual transformer units, in particular when fed with primary voltage signals that have a certain phase shift between each other, helps to reduce the volume and weight as compared to an individual transformer core structure for each of the transformer units. The multilevel converter is beneficially used in railway traction applications.
REFERENCES:
patent: 2418643 (1947-04-01), Huge
patent: 5182535 (1993-01-01), Dhyanchand
patent: 6340851 (2002-01-01), Rinaldi et al.
patent: 6348848 (2002-02-01), Herbert
patent: 6380836 (2002-04-01), Matsumoto et al.
patent: 6795282 (2004-09-01), Neumuller et al.
patent: 26 14 445 (1977-10-01), None
patent: 198 41 133 (2000-03-01), None
patent: 0 597 409 (1994-05-01), None
patent: 1 113 570 (2001-07-01), None
patent: 1 226 994 (2002-07-01), None
patent: 01-179405 (1989-07-01), None
EPO Search Report dated Dec. 23, 2005.
International Search Report and Written Opinion of the International Search Authority.
Kuns M et al: “Entwiklung Einer Massearmen Energieversorgung Fuer Elekirische Triebfahrzeuge Developing a Low-Mass Power Supply for Electric Rail Vehicles Development D'une Alimentation Energique a Vehicles Ferroviaireselectriques” Zeitschrift Fur Eisenbahnwesen Und Verkehrstechnik Die Eisenbahntechnik + Glasers Annalen, Georg Siemens Verlagsbuchhandlung Berlin, DE, vol. 123, No. 11/12, Nov. 1999, pp. 423-426 XP000877540.
Descollaz Bernard
Dormia Georges
Hugo Nicolas
Stefanutti Philippe
Zueger Harry
ABB Technology AG
Buchanan & Ingersoll & Rooney PC
Laxton Gary L
LandOfFree
Multilevel converter and method of converting a supply voltage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multilevel converter and method of converting a supply voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multilevel converter and method of converting a supply voltage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4033775