Electric power conversion systems – Current conversion – Including an a.c.-d.c.-a.c. converter
Reexamination Certificate
2005-12-30
2009-11-17
Leykin, Rita (Department: 2837)
Electric power conversion systems
Current conversion
Including an a.c.-d.c.-a.c. converter
C363S068000, C363S070000, C062S228400
Reexamination Certificate
active
07619906
ABSTRACT:
A variable speed drive with a converter that is controllable to precharge a DC link is provided. The variable speed drive also includes an inverter. The converter converts a fixed line frequency, fixed line voltage AC power from an AC power source into DC power. The DC link filters the DC power from the converter. Finally, the inverter is connected in parallel with the DC link and converts the DC power from the DC link into a variable frequency, variable voltage AC power. The converter includes a plurality of pairs of power switches, wherein each pair of power switches includes a reverse blocking power switch arrangement connected in anti-parallel to another reverse blocking power switch arrangement. Alternatively, each pair of power switches includes a reverse blocking power switch connected in anti-parallel with a silicon carbide controlled rectifier.
REFERENCES:
patent: 3621366 (1971-11-01), Duff et al.
patent: 4503938 (1985-03-01), Nomura
patent: 4697131 (1987-09-01), Schauder et al.
patent: 4761726 (1988-08-01), Brown
patent: 4787021 (1988-11-01), Hokari et al.
patent: 4833584 (1989-05-01), Divan
patent: 4864483 (1989-09-01), Divan
patent: 4959602 (1990-09-01), Scott et al.
patent: 5038267 (1991-08-01), De Doncker et al.
patent: 5123080 (1992-06-01), Gillett et al.
patent: 5179842 (1993-01-01), Kanazawa
patent: 5371645 (1994-12-01), Mochizuki
patent: 5483142 (1996-01-01), Skibinski et al.
patent: 5499178 (1996-03-01), Mohan et al.
patent: 5570279 (1996-10-01), Venkataramaan
patent: 5625549 (1997-04-01), Horvat
patent: 5757599 (1998-05-01), Crane
patent: 5852558 (1998-12-01), Julian et al.
patent: 5889667 (1999-03-01), Bernet
patent: 5909367 (1999-06-01), Change
patent: 5936875 (1999-08-01), Kim et al.
patent: 6163472 (2000-12-01), Colby
patent: 6313602 (2001-11-01), Arefeen et al.
patent: 6407937 (2002-06-01), Bruckmann et al.
patent: 6507503 (2003-01-01), Norrga
patent: 6566764 (2003-05-01), Rebsdorf et al.
patent: 6603675 (2003-08-01), Norrga
patent: 6606872 (2003-08-01), Smith
patent: 6625046 (2003-09-01), Geissler
patent: 6631080 (2003-10-01), Trimble et al.
patent: 6657874 (2003-12-01), Yu
patent: 6704182 (2004-03-01), Bruckmann et al.
patent: 6732968 (2004-05-01), Yoon
patent: 6917179 (2005-07-01), Komatsu et al.
patent: 2002/0167825 (2002-11-01), Okayama et al.
patent: 2002/0175522 (2002-11-01), Wacknov et al.
patent: 2002/0176261 (2002-11-01), Norrga
patent: 2003/0133317 (2003-07-01), Norrga
patent: 2003/0168919 (2003-09-01), Friedrichs et al.
patent: 2003/0231518 (2003-12-01), Peng
patent: 2004/0008005 (2004-01-01), Sakai et al.
patent: 2004/0012986 (2004-01-01), Riggio et al.
patent: 2005/0188708 (2005-09-01), Wills et al.
patent: 2005/0189904 (2005-09-01), Wills et al.
patent: 2005/0190511 (2005-09-01), Crane et al.
patent: 2005/0223730 (2005-10-01), Kester et al.
patent: 2004098038 (2004-11-01), None
Klumpner C. et al; “Using Reverse Blocking IGBTs in Power Converters for Adjustable Speed Drives”, Conference Record of the 2003 IEEE Industry applications Conference 38th IAS Annual Meeting, Salt Lake City, UT, Oct. 12-16, 2003, vol. 3 of 3 Conf. 38, pp. 1516-1523 USA.
Ozpineci B. et al.: “4H-SiC GTO Thyristor and p-n. Diode Loss Models for HVDC Converter”, Industry Applications Conference 2004, 39th IAS Annual Meeting, conference record of the 2004 IEEE Seattle, WA USA, Oct. 2004, vol. 2, pp. 1238-1243.
Jue Wang et al.: “Evaluation of High-Voltage 4H-SiC Switching Devices” IEEE Transactions on Electron Devices, IEEE Service Center, Piscataway, NJ, vol. 46, No. 3, Mar. 1999.
Silicon Carbide npnp Thyristors, John H. Glenn Research Center, Cleveland, Ohio, downloaded from http://ww.nasatech.com/Briefs/Dec00/LEW16750.html on Jan. 20, 2004, 3 pages.
Ahmed Elasser and T. Paul Chow, Silicon Carbide Benefits and Advantages for Power Electronics Circuits and Systems, Proceedings of the IEEE, vol. 90, No. 6, Jun. 2002, pp. 969-986.
Leykin Rita
McNees Wallace & Nurick LLC
York International Corporation
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