Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate
2005-07-12
2005-07-12
Tibbits, Pia (Department: 2838)
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
C320S137000
Reexamination Certificate
active
06917124
ABSTRACT:
An uninterruptible power supply is disclosed that includes a digital controller comprising a plurality of microprocessors. These microprocessors are programmed and arranged to provide various control features heretofore unavailable using analog controllers of the prior art.
REFERENCES:
patent: 5920189 (1999-07-01), Fisher et al.
patent: 6274950 (2001-08-01), Gottlieb et al.
patent: 0 473 925 (1992-03-01), None
Tzou Y. Y. et al., “Design and Implementation of a Multiprocessor-based Uninterruptible Power Supply,” Apr. 11-14, 1988, Proceedings of PESC '88, Power Electronics Specialists Conference, vol. 2, pp. 650-657, XP010070218 Kyoto (Japan).
Dhaussy P. et al., “Global Control Synthesis for an MIMD/FPGA Machine,” FPGAS for Custom Computing Machines, 1994. Proceedings. IEEE Workshop on Napa Valley, CA, USA Apr. 10-13, 1994, Los Alamitos, CA, USA, IEEE Comput. Soc, Apr. 10, 1994, pp. 72-81.
International Search Report dated Nov. 15, 2002.
Moss, W.H., “What is a DeviceNet?”, I & CS- Industrial and Process Control Magazine, Chilton Company. Radnor, PA, US, vol. 69, No. 12, Dec. 1, 1996, pp. 45-48, XP000721789.
Wong C. et al., “Adaptive Phase Control for Three Phase PWM AC-to-DC Converters With Constant Switching Frequency”, Power Conversion Conference, 1993. Yokohama 1993., Conference Record of the Yokohama, Japan Apr. 19-21, 1993, New York, NY, USA, IEEE, US, Apr. 19, 1993, pp. 73-78, XP010056589.
Wall, R.W. et al., “Design and Microcontroller Implementation of a Three Phase SCR Power Converter”, Journal of Circuits, Systems and Computers, World Scientific, London, GB, vol. 6, No. 6, Dec. 1996, pp. 619-633, XP008006403.
Shi-Liang Jung et al., “Discrete Feedforward Sliding Mode Control of a PWM Inverter for Sinusoidal Output Waveform Synthesis”, Power Electronics Specialists Conference, PESC '94 Record., 25thAnnual IEEE Taipei, Taiwan Jun. 20-25, 1994, New York, NY, USA, IEEE, Jun. 20, 1994, pp. 552-559, XP010121201.
El-Bakry M.A. et al., “An UPS With Proper Crest Factor and Efficiency For Computer Loads”, IECEC '97. Proceedings of the 32ndIntersociety Energy Conversion Engineering Conference. Energy Systems, Renewable Energy Resources, Environmental Impact and Policy Impacts on Energy, Honolulu, HI, Jul. 27-Aug. 1, 1997, Intersociety Energy Convers, vol. 3 & 4, Jul. 27, 1997, pp. 1726-1731, XP010268850.
O'Mara, B.E., “Design and Fabrication of a Prototype ½ kW Smart Array Controller”, IECEC '97. Proceedings of the 32ndIntersociety Energy Conversion Engineering Conference. Energy Systems, Renewable Energy Resources, Environmental Impact and Policy Impacts on Energy, Honolulu, HI, Jul. 27-Aug. 1, 1997, Intersociety Energy Convers, vol. 3 & 4, Jul. 27, 1997, pp. 1569-1574, XP010268795.
O'Mara, B.E. “Smart Array Power Controllers: New DC PV System Design Element” Solar Energy Materials and Solar Cells, Elsevier Science Publishers, Amsterdam, NL, vol. 47, No. 1-4, Oct. 1, 1997, pp. 109-116, XP004099630.
Martins, A.P. et al., “A Control Method for High Power UPSs in Parallel Operation” Circuits and Systems, 1995., Proceedings., Proceedings of the 38thMidwest Symposium on Rio de Janeiro, Brazil, Aug. 13-16, 1995, New York, NY USA, IEEE, US, Aug. 13, 1995, pp. 208-211, XP010165084.
Bell Kevin Jay
Bush Terry Dwane
Eschhofen Kevin Kim
Funk Jon Ross
Heber Brian Paul
Howrey Simon Arnold & White , LLP
Liebert Corporation
Tibbits Pia
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