Electric power conversion systems – Current conversion – Having plural converters for single conversion
Reexamination Certificate
2007-05-31
2011-10-18
Han, Jessica (Department: 2838)
Electric power conversion systems
Current conversion
Having plural converters for single conversion
C363S132000, C363S017000
Reexamination Certificate
active
08040702
ABSTRACT:
Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of each of smoothing capacitors, are connected in series. One of elementary series circuits, each including a capacitor and an inductor, is disposed between any adjacent two of the circuits with the elementary series circuits set to have the same period of resonance. The MOSFETs of rectifier circuits are brought into an ON state simultaneously with the MOSFETs of a driving inverter circuit and brought into an OFF state earlier than the MOSFETs of the driving inverter circuit by a period of time not exceeding a time period equal to (period of resonance)/2. A resonance phenomenon of the capacitor and the inductor is used and conduction loss in the rectifier circuits is reduced in DC/DC power conversion performed through charging and discharging operation of the capacitor.
REFERENCES:
patent: 5532718 (1996-07-01), Ishimaru
patent: 6353547 (2002-03-01), Jang et al.
patent: 7403400 (2008-07-01), Stanley
patent: 7729144 (2010-06-01), Urakabe et al.
patent: 2005/0099827 (2005-05-01), Sase et al.
patent: 2005/0174098 (2005-08-01), Watanabe et al.
patent: 2008/0252145 (2008-10-01), Urakabe et al.
patent: 2008/0253156 (2008-10-01), Urakabe et al.
patent: 63 190551 (1988-08-01), None
patent: 5 49259 (1993-02-01), None
patent: 7 298608 (1995-11-01), None
patent: 9 191638 (1997-07-01), None
patent: 2005 51977 (2005-02-01), None
patent: 2005 151608 (2005-06-01), None
patent: 2005 224060 (2005-08-01), None
patent: 2006 262619 (2006-09-01), None
Sano, K. et al., “A New Control Method of a Resonant Switched-Capacitor Converter and the Application for Balancing of the Split DC Voltages in a Multilevel Inverter”, The Transactions of the Institute of Electrical Engineers of Japan D, vol. 127, No. 3, pp. 16 and 330-338 (2007) (with English abstract and partial English Translation).
Deriha, F. et al., “Control Method of Resonant Switched Capacitor Converter”, IEICE Technical Report, EE2005-26, pp. 7-12 (2006) (with English abstract).
Shoyama, M. et al., “Operation Analysis of Boost Resonant Switched Capacitor Converter”, IEICE Communication Society Conference, p. 228 (2004) (with partial English translation).
Anzai Kiyoharu
Ikeda Matahiko
Iwata Akihiko
Kikunaga Toshiyuki
Kobayashi Masaru
Han Jessica
Mitsubishi Electric Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
DC/DC power converting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with DC/DC power converting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC/DC power converting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4288352