Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-09-11
2007-09-11
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
Reexamination Certificate
active
11509146
ABSTRACT:
A power converter nearly losslessly delivers energy and recovers energy from capacitors associated with controlled rectifiers in a secondary winding circuit, each controlled rectifier having a parallel uncontrolled rectifier. First and second primary switches in series with first and second primary windings, respectively, are turned on for a fixed duty cycle, each for approximately one half of the switching cycle. Switched transition times are short relative to the on-state and off-state times of the controlled rectifiers. The control inputs to the controlled rectifiers are cross-coupled from opposite secondary transformer windings.
REFERENCES:
patent: 3663941 (1972-05-01), Pasciutti
patent: 4438411 (1984-03-01), Rubin et al.
patent: 4586119 (1986-04-01), Sutton
patent: 4788450 (1988-11-01), Wagner
patent: 4788634 (1988-11-01), Schlecht et al.
patent: 4812672 (1989-03-01), Cowan et al.
patent: 5019954 (1991-05-01), Bourgeault et al.
patent: 5179512 (1993-01-01), Fisher et al.
patent: 5274543 (1993-12-01), Loftus, Jr.
patent: 5303138 (1994-04-01), Rozman
patent: 5343383 (1994-08-01), Shinada et al.
patent: 5396412 (1995-03-01), Barlage
patent: 5442534 (1995-08-01), Cuk et al.
patent: 5513092 (1996-04-01), Goebel
patent: 5528480 (1996-06-01), Kikinis et al.
patent: 5528482 (1996-06-01), Rozman
patent: 5621621 (1997-04-01), Lilliestrale
patent: 5625541 (1997-04-01), Rozman
patent: 5663887 (1997-09-01), Warn et al.
patent: 5726869 (1998-03-01), Yamashita et al.
patent: 5771160 (1998-06-01), Seong
patent: 5774350 (1998-06-01), Notaro et al.
patent: 5870299 (1999-02-01), Rozman
patent: 5872705 (1999-02-01), Loftus, Jr. et al.
patent: 5880949 (1999-03-01), Melhem et al.
patent: 6016258 (2000-01-01), Jain et al.
patent: 6046920 (2000-04-01), Cazabat et al.
patent: 6066943 (2000-05-01), Hastings et al.
patent: 6088329 (2000-07-01), Lindberg et al.
patent: 6252781 (2001-06-01), Rinne et al.
patent: 6728118 (2004-04-01), Chen et al.
patent: 6853568 (2005-02-01), Li et al.
patent: 7050309 (2006-05-01), Farrington
patent: 2003/0174522 (2003-09-01), Xu et al.
patent: 2005/0047177 (2005-03-01), Tobita
patent: 2006/0209572 (2006-09-01), Schlecht
patent: 2006/0209573 (2006-09-01), Schlecht
patent: 2006/0262575 (2006-11-01), Schlecht
patent: 0 549 920 (1993-07-01), None
patent: 1 231 705 (2002-08-01), None
patent: 06315263 (1994-11-01), None
patent: WO88/09084 (1988-11-01), None
Casey, Leo Francis, “Circuit Design For 1-10 MHZ DC-DC Conversion,” MIT Doctoral Thesis, Jan. 1989, pp. 1-216.
Ferencz, Andrew, “A 250 W High Density Point-of-Load Converter,” MIT Master of Science Thesis, Sep. 1989, pp. 1-117.
Mohandes, Bijan, MOSFET Synchronous Rectifiers Achieve 90% Efficiency—Part I and Part II, PCIM, Jun. 1991, pp. 10-13 & 55-61.
Cobos, J.A., et al., “Resonant Reset Forward Topologies for Low Output Voltage On Board Converters,” IEEE, 1994, pp. 703-708.
Tabisz, W.A., et al., “A MOSFET Resonant Synchronous Rectifier for High-Frequency DC/DC Converters,” Proceedings of the Power Electronics Specialists Conference, San Antonio, TX, Jun. 10-15, 1990, pp. 769-779.
Wiegman, H.L.N., et al., “A Dual Active Bridge SMPS Using Synchronous Rectifiers,” HFPC May 1990 Proceedings, pp. 336-346.
Shoyama, Masahito, et al., “Zero-Voltage-Switching Realized by Magnetizing Current of Transformer in Push-Pull Current-Fed DC-DC Converter,” IEEE, 1993, pp. 178-184.
Shoyama, Masahito, et al., “Zero-Voltage-Switched Push-Pull DC-DC Converter,” IEEE, 1991, pp. 223-229.
Xiao, Li, et al, “Soft Switched PWM DC/DC Converter With Synchronous Rectifiers,” IEEE 1996, pp. 476-484.
Blanchard, Richard, et al., “The Design of a High Efficiency, Low Voltage Power Supply Using MOSFET Synchronous Rectification and Current Mode Control,” IEEE, 1985, pp. 355-361.
Jitaru, Ionel Dan, et al, “High Efficiency DC-DC Converter,” IEEE, 1994, pp. 638-644.
Harper, D.J., et al., “Controlled Synchronous Rectifier,” HFPC May 1988 Proceedings, pp. 165-172.
Acker, Brian, et al., “Current-Controlled Synchronous Rectification,” IEEE 1994, pp. 185-191.
Murakami, Naoki, et al., “A High-Efficiency 30-W Board Mounted Power Supply Module,” IEEE 1991, pp. 122-127.
Casey, Leo F., et al., “A High Frequency, Low Volume, Point-of-Load Power Supply for Distributed Power Systems,” IEEE 1987, pp. 439-450.
Schlecht, Martin F., “Research Results from the Study of A High Efficiency, Highly Manufacturable DC-DC Converter,” unpublished, pp. 1-32.
Gachora, John Mburu, “Design of a Four-Phase Switchmode High Efficiency Power Supply,” MIT Master of Engineering Thesis, 1994, pp. 1-66.
Blanchard R., et al., “MOSFETs Move In On Low Voltage Rectification,” Official Proceedings of the Ninth International PCI '84 Conference, Oct. 29-31, 1984, pp. 213-222.
Garcia, O. et al., “Zero Voltage Switching In The PWM Half Bridge Topology With Complementary Control And Synchronous Rectification,” Record of the Annual Power Electronics Specialist Conference, Pesc, Atlanta, Jun. 12-15, 1995, vol. 1, No. CONF. 26, Jun. 12, 1995, IEEE, pp. 286-291.
Mweene, L. Haachitaba, et al., “A High-Efficiency 1.5 kW, 390-50 V Half-Bridge Converter Operated at 100% Duty-Ratio,” IEEE, 1992 pp. 723-730.
Mweene, Loveday Haachitaba, “The Design of Front-End DC-DC Converters of Distributed Power Supply Systems with Improved Efficiency and Stability,” Thesis, Massachusetts Institute of Technology, Sep. 1992, pp. 1-184.
Hamilton Brook Smith & Reynolds P.C.
Nguyen Matthew V.
SynQor, Inc.
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