Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Reexamination Certificate
2007-09-12
2010-10-26
Behm, Harry (Department: 2838)
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
C363S069000, C323S361000
Reexamination Certificate
active
07821799
ABSTRACT:
A power converter includes an isolated or a nonisolated current-doubler rectification circuit including two magnetic circuit elements, each magnetic circuit element formed with a primary winding and a voltage-sensing winding. The primary windings are coupled in series. The voltage-sensing windings are also coupled in series but with a coupling sense opposite from that of the primary windings. A properly sized inductor and capacitor are coupled in series with the voltage-sensing windings to produce a ripple-cancellation current with slope opposite to a net slope error of currents produced in the two magnetic circuit elements. The current-doubler rectification circuit is preferably coupled to a rectangular ac input waveform. By sensing a scaled voltage difference between two magnetic circuit elements, a very low level of output ripple is produced by the circuit with very low power losses over a range of operating conditions.
REFERENCES:
patent: 5038263 (1991-08-01), Marrero et al.
patent: 5166869 (1992-11-01), Hesterman
patent: 6009004 (1999-12-01), Swamy
patent: 6163466 (2000-12-01), Davila, Jr. et al.
patent: 6317341 (2001-11-01), Fraidlin et al.
patent: 6693805 (2004-02-01), Steigerwald et al.
patent: 7142440 (2006-11-01), de Rooij et al.
patent: WO 2005034319 (2005-04-01), None
Gao, X., et al., “A High-Performance, Integrated Magnetics Scheme for Buck-Cascaded Push-Pull Converter,” IEEE Power Electronics Letters, Mar. 2004, pp. 29-33, vol. 2, No. 1, IEEE.
Gao, X., et al., “Integrated Magnetics Scheme for ZVS Hybrid Converter with Improved Performance,” 2004 35thAnnual IEEE Power Electronics Specialists Conference, Jun. 20, 2004, pp. 3681-3687, IEEE.
Hamill, D.C., et al., “A ‘Zero’ Ripple Technique Applicable to Any DC Converter,” IEEE Power Electronics Specialists Conference, Jun. 27, 1999, pp. 1165-1171, vol. 2, IEEE.
Pietkiewicz, A., et al., “Coupled-Inductor Current-Doubler Topology in Phase-Shifted Full Bridge DC-DC Converter,” IEEE Proceedings of INTELEC 1998, paper 2-3, 9 pages, IEEE.
Schutten, M. J., et al., “Ripple Current Cancellation Circuit,” IEEE Applied Power Electronics Conference, 2003, pp. 464-470, IEEE.
Severns, R.P., et al., “Modern DC-to-DC Switchmode Power Converter Circuits,” 1985, pp. 280-294, Van Nostrand Reinhold Co., New York.
Xu, P., et al., “A Novel Integrated Current Doubler Rectifier,” IEEE Applied Power Electronics Conference 2000, pp. 735-740, IEEE.
Yan, L., et al., “Integrated Magnetic Full Wave Converter with Flexible Output Inductor,” IEEE Applied Power Electronics Conference 2002, pp. 824-830.
Behm Harry
Slater & Matsil L.L.P.
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