Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Reexamination Certificate
2011-06-28
2011-06-28
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
Reexamination Certificate
active
07969755
ABSTRACT:
A device for the transmission of electrical energy includes at least one current converter. Each current converter has phase elements with respective arrangements of circuit elements that comprise at least two switchable power semiconductors each and at least two free-wheeling diodes, each connected in parallel thereto, and energy storing means. The transfer properties in or between power distribution networks are improved with the novel device. The device is provided with means for controlling the current converter in such a manner that the zero crossing, the amplitude and/or the instantaneous values of an alternating current of a transfer network that can be connected to the device and/or the direct current of a direct current line that connects at least one current converter to a direct current source, and/or the direct voltage and the direct current of at least three interconnected current converters can be controlled.
REFERENCES:
patent: 4780802 (1988-10-01), Miyashita et al.
patent: 4816985 (1989-03-01), Tanahashi
patent: 4894763 (1990-01-01), Ngo
patent: 5198746 (1993-03-01), Gyugyi et al.
patent: 5198970 (1993-03-01), Kawabata et al.
patent: 5726550 (1998-03-01), Inaniwa et al.
patent: 6204627 (2001-03-01), Watanabe et al.
patent: 6278626 (2001-08-01), Teichmann
patent: 6621723 (2003-09-01), Karasawa et al.
patent: 7135835 (2006-11-01), Yamada et al.
patent: 7142439 (2006-11-01), Oh
patent: 7274576 (2007-09-01), Zargari et al.
patent: 7388353 (2008-06-01), Kato et al.
patent: 7471525 (2008-12-01), Suzuki et al.
patent: 7480160 (2009-01-01), Bakran et al.
patent: 7499296 (2009-03-01), Baudesson et al.
patent: 7609022 (2009-10-01), Oyobe et al.
patent: 2008/0068870 (2008-03-01), Eguchi et al.
patent: 19850886 (2000-05-01), None
patent: 10103031 (2002-07-01), None
patent: 10323220 (2004-12-01), None
patent: 1087512 (2001-03-01), None
patent: 0028636 (2000-05-01), None
patent: 2004082115 (2004-09-01), None
Knudsen et al: “Description and Prospective Applications of New Multi-Terminal HVDC System Concepts”, CIGRE Conf. Internationale des Grands Reseaux Electriques, Aug. 26, 1990, pp. 1-11, XP000770178.
Davies Mark
Dorn Jörg
Huang Hartmut
Retzmann Dietmar
Berhane Adolf
Greenberg Laurence A.
Locher Ralph E.
Siemens Aktiengesellschaft
Stemer Werner H.
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