Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1993-10-22
1995-08-22
Stephan, Steven L.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 51, 323298, 323293, 323352, H02H 710, G05F 156
Patent
active
054446104
ABSTRACT:
A high-power modulator includes a plurality of means for limiting voltage and a plurality of controllable switches. Each of the switches is connected in parallel with a different one of the voltage limiting means to form a plurality of parallel pairs. Each of the parallel pairs is connected to each other in a series combination. A first parallel pair in the series combination can be connected to a main power source, and a last parallel pair in the series combination can be connected to a load. Each of the switches is switchable from an off or open position to an on or closed position. With the switch in the off position, voltage applied by the main power source which is above a first predetermined voltage results in current provided by the main power source being conducted through the voltage limiting means and a corresponding voltage potential drop across the voltage limiting means being substantially independent of the current conducted therethrough, and voltage applied by the main power source which is below the first predetermined voltage results in current provided by the main power source being substantially prevented from passing through the voltage limiting means. With the switch in the on position, current provided by the main power source is substantially all conducted through the switch and a voltage potential drop across the voltage limiting means is substantially zero. When voltage applied by the main power source is below a second predetermined voltage, a ratio of switches in the on position to those in the off position determines a total voltage potential drop across the series combination and thus the voltage applied to the load.
REFERENCES:
patent: 3018433 (1962-01-01), Stone, IV
patent: 3150310 (1964-09-01), Ault
patent: 3160807 (1964-12-01), Packard
patent: 3192467 (1965-06-01), Baracket
patent: 3384758 (1968-05-01), Kelley
patent: 3458801 (1969-07-01), Polson
patent: 3500172 (1970-03-01), Eckstein, Jr.
patent: 3551788 (1970-12-01), Summer
patent: 3611031 (1971-10-01), Lutz
patent: 3761799 (1973-09-01), Shuey
patent: 3892977 (1975-07-01), Bierly
patent: 3956687 (1976-05-01), Lindenman
patent: 4124886 (1978-11-01), Black et al.
patent: 4334264 (1982-06-01), Knudsen
patent: 4400660 (1983-08-01), Schaefer
patent: 4563628 (1986-01-01), Tietz et al.
patent: 4594634 (1986-06-01), Schmike
patent: 4665458 (1987-05-01), Matsuoka et al.
patent: 4814966 (1989-03-01), Ekstrand
patent: 4835668 (1989-05-01), Palm et al.
patent: 4893070 (1990-01-01), Milberger et al.
patent: 4947102 (1990-08-01), Ekstrand et al.
patent: 4999760 (1991-03-01), Tietema
patent: 5155673 (1993-10-01), Takahashi et al.
Marcel P. J. Gaudreau, "Solid State Circuit Breakers for the Navy", Small Business Innovation Research Proposal, U.S. Department of Defense, Appendix B (1992).
Marcel P. J. Gaudreau, "A Long Pulse, High Power Solide-State Gyrotron and Neutral Beam Modular", Small Business Innovation Research Abstracts of Phase I Awards, U.S. Department of Energy, p. 39 (1992).
Marcel P. J. Gaudreau, "A Long Pulse, High Power Solid State Gyrotron Modulator-Diversified Technologies, Inc.", Small Business Innovation Research Abstracts of Phase I Awards, U.S. Department of Energy, p. 91 (1991).
Marcel P. J. Gaudreau, "A Very High Power Solid State Modulator System for Fusion Systems-Diversified Technologies, Inc.", Small Business Innovation Research Abstracts of Phase I Awards, U.S. Department of Energy, pp. 42-43 (1989).
Gaudreau et al., "Detailed Electrical Characterization of the Tara Neutral Beam Injector System", Proceedings of IEEE, 11th Symposium on Fusion Engineering, Austin, Tex., vol. 1, No. 20, p. 187, 1986.
Levy et al., "Commercial Applications for Modulators and Pulse Power Technology", IEEE, Jul. 1992, pp. 8-14, 1992 Twentieth Power Modulator Symposium.
Istvan Nogradi, "Hardfet Modulator", IEEE, Jul. 1992, pp. 189-192, 1992 Twentieth Power Modulator Symposium.
R. Pastore et al. "Preliminary Evaluation of High Power Solid-State Switches for Electric Guns Applications", IEEE, Jul. 1992, pp. 281-284, 1992 Twentieth Power Modulator Symposium.
Bill North and Bill Reass, "Electrical Design and Operation of a Two-Klystron RF Station for the Los Alamos National Laboratory's Neutral Particle Beam Experiment", IEEE, Jul. 1992, pp. 15-18, 1992 Twentieth Power Modulator Symposium.
Paul Robinson and Bill North, "Compact Floating-Deck Modulator for HAX Transmitter", IEEE, Jul. 1992, pp. 41-44, 1992 Twentieth Power Modulator Symposium.
Venkatanarayana et al., "Diagnostic Techniques for On-line Monitoring of High Speed Data in High Voltage Pulsed Power System", IEEE, Jul. 1992, pp. 72-75, 1992 Twentieth Power Modulator Symposium.
Pfeffer et al., "500 Kilowatt Solid-State Modulators for Fermilab's 400 MeV LINAC", IEEE, Jul. 1992, pp. 166-168, 1992 Twentieth Power Modulator Symposium.
Archer Semiconductor Reference Guide, 1987 Edition p. 11, Special Purpose Devices (Varistor).
Dionne Jean-Paul
Gaudreau Marcel P. J.
Diversified Technologies, Inc.
Nappi Robert
Stephan Steven L.
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