THEORY AND DESIGN OF MEDIUM VOLTAGE PULSED CURRENT SUPPLIES USING WIDE BANDGAP SOLID STATE DEVICES
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Authors
Martino, Christopher A.
Subjects
railgun
silicon carbide
gallium nitride
positive buck-boost converter
silicon carbide
gallium nitride
positive buck-boost converter
Advisors
Julian, Alexander
Date of Issue
2015-12
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Applications such as superconductor testing, fuse testing, pulsed lasers, and electromagnetic railguns require high-voltage, pulsed-current, power supplies that are energy efficient, compact, and reliable. This dissertation utilizes experimental analysis of scaled circuits and simulation to investigate solid state devices that enable more efficient, scaled-down, and controllable current pulse circuits. It is true that discrete solid state devices exist that are capable of withstanding large voltages, conducting large currents, and switching rapidly. This dissertation improves these devices with a unique wide bandgap vertical superjunction drift region edge termination enabling low resistance, high off voltage, and more energy efficient semiconductor devices. To improve the magnitude control and rise/fall time of the current pulse, an original positive buck boost current pulse–forming circuit control method is also demonstrated that meets the unique demands of a linearly rising output voltage and a quadratically falling input voltage.
Type
Thesis
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Distribution Statement
Distribution Statement A. Approved for public release: Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.