• A dc arc model for series faults in low voltage microgrids 

      Uriarte, F.M.; Gattozzi, A.L.; Herbst, J.D.; Estes, H.B.; Hotz, T.J.; Kwasinski, A.; Hebner, R.E. (IEEE, 2012-12)
      This paper presents a dc arc model to simplify the study of a critical issue in dc microgrids: series faults. The model is derived from a hyperbolic approximation of observed arc voltage and current patterns, which permit ...
    • The DES Railgun Facility at CEM-UT 

      Holland, L. D.; (IEEE, 1984-03)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has constructed a facility for the operation of electromagnetic (EM) launcher experiments. The facility was specifically designed to investigate ...
    • Description of Pulsed Homopolar Generator Technologies for a Fusion Ignition Experiment 

      Walls, W.A.; Gully, J.H.; Weldon, W.F.; Woodson, H.H. (American Nuclear Society, 1991-05)
      The concept for a single-turn tokamak experiment IGNITEX 1 makes possible the realization of a controlled, self-sustained fusion reaction in the near term with relative simplicity and low cost. The IGNITEX tokamak utilizes ...
    • Design and analysis of a 20 MW propulsion power train 

      Beno, J.H.; Flynn, M.M.; Hayes, R.J.; Hebner, R.E.; Jackson, J.R.; Ouroua, A.; Pichot, M.A.; Schroeder, E.; Zierer, J.J.; Weeks, D.A. (, 2004-03)
      The electric ship research program at the University of Texas at Austin focuses on the development of power system technology for future electric ships. The main goal of the on-going research activity is to identify critical, ...
    • Design and analysis of passive homopolar null flux bearings 

      Davey, K.R.; Filatov, A.; Thompson, R.C. (IEEE, 2005-03)
      Electrodynamic Maglev systems (EDSs) and passive magnetic bearings (PMBs) generate magnetic forces by induction through the movement of permanent or superconducting magnets past conducting coils. Nearly all EDSs and PMBs ...
    • Design and Construction of a Two-Stage Opening Switch 

      Rech, B.; Zowarka, Jr, R.C. (IEEE, 1986-11)
      Homopolar generators (HPGs) are modern day energy stores (megajoules) capable of large currents (megamps). The generators are typically low voltage and large capacitance, disallowing loads requiring fast rise times to be ...
    • Design and Demonstration of an Extended Range Hydrogen Fuel Cell Utility Vehicle 

      Hearn, C.S.; Lewis, M.C.; Thompson, R.T.; Chen, D.; Hanlin, J.; Zuckerman, D.; Lindsay, T. (IEEE, 2011-09)
      This paper discusses the design, build, and demonstration of two hybrid electric fuel cell utility vehicles for a program sponsored by DLA (Defense Logistics Agency). The design emphasis for the utility vehicles was range ...
    • Design and Development of Extremely High Velocity Electromagnetic Launch Accelerators--GEDI program 

      Upshaw, J. L.; Zowarka, Jr, R. C.; Cook, R. W.; Weeks, D. A. (IEEE, 1989-01)
      Research is described that has centered around 1, 2, or 8 m long, 12.7 mm square-bore railguns powered by one or more of the following power supplies: a 1 MJ capacitor-bank-driven, pulse-forming network; a 6 MJ homopolar-generator ...
    • Design and Fabrication of a Tandem, Five Megamapere Initiate Switch for the Battery Upgraded Supply 

      Aanstoos, T.A.; Zowarka, R.C.; Upshaw, J.L. (IEEE, 1993-01)
      The authors report on the design, fabrication, and component testing for the tandem initiate switch system for the battery upgraded supply, in which each armature is rated for a 3 s rise to 2.5 MA peak current (2.8 MA ...
    • Design and Implementation of Explosive Opening Switches in Inductive Circuits 

      Penney, C.E.; Hotz, T.J.; Kitzmiller, J.R.; Thelen, R.F.; Zowarka, R.C. (IEEE, 2001-01)
      Self-excitation in pulsed duty alternators is utilized to meet energy and power density system requirements. In the eventually fielded system, a small energy source will be pulsed into the field coil to start the excitation ...
    • Design and Operation of a High-Energy Railgun Facility 

      Peterson, D. R.; Price, J. H.; Weldon, W. F.; Zowarka, Jr, R. C.; Fulcher, C. W.; Hahne, J. H. (IEEE, 1989-01)
      A high-energy railgun range has recently been put into operation. Projectiles are fired straight down into a target chamber 45-m underground. After discussing the design philosophy, the authors describe the railgun, the ...
    • Design and Testing of a 0.60 Caliber, Augmented Railgun 

      Fuller, R. L.; Kitzmiller, J. R.; Ingram, M. W. (IEEE, 1991-01)
      The design for a 0.60 caliber, augmented, laminated, solid-armature railgun is presented. Included is the discussion of the magnetic pressure distribution and heating on the molybdenum and copper conductors, and gun stiffness ...
    • Design and Testing of a Flywheel Battery for a Transit Bus 

      Hayes, R.J.; Kajs, J.P.; Thompson, R.C.; Beno, J.H. (Society of Automotive Engineers, Inc., 1999)
      The University of Texas at Austin Center for Electromechanics (UT-CEM) has designed and tested a flywheel energy storage system conventionally referred to as a flywheel battery (FWB) for power averaging on a hybrid electric ...
    • Design and testing of a high-speed spin test for evaluating pulse alternator windage loss effects 

      Werst, M.D.; Hahne, J.J.; Liu, H-P.; Penney, C.E. (IEEE, 2003-01)
      Advanced pulse alternator designs require rotor surface speeds in excess of 1000 m/s. High tip speeds and an operating environment consisting of partial vacuum result in frictional windage losses and subsequent heating of ...
    • Design and Testing of a Rapid Fire, Lightweight, Ultra Stiff Railgun for a Cannon Caliber Electromagnetic Launcher System 

      Werst, M. D.; Cook, K. G.; Kitzmiller, J. R.; Liu, H-P.; Price, J. H.; Yun, H. D. (IEEE, 1995-01)
      The goal of the Cannon Caliber Program is to drive 185 g integrated launch packages to 1850 m/s. Three, five-round salvos with a firing rate of 5 Hz are intended to defeat specified targets at a range of up to 3 km. After ...
    • Design and Testing of Integrated Metal Armature Sabots for Launch of Armor Penetrating Projectiles from Electric Guns 

      Price, J.H.; Yun, H.D. (IEEE, 1995-01)
      Electromagnetic railguns have now demonstrated their potential as an efficient vehicle for the launching of long rod armor penetrating projectiles capable of defeating heavily armored mobile targets. Mid-body-drive, ...
    • Design and Testing of Large-Bore, Ultra-Stiff Railguns 

      Price, J.H.; Fahrenthold, E.P.; Peterson, D.R.; Weldon, W.F.; Zowarka, R.C.; Fulcher, C.W.; Ingram, M.W. (IEEE, 1989-01)
      As part of an EM (electromagnetic) gun technology demonstration program, a systematic design approach targeted at identifying critical gun design constraints affecting hypervelocity projectile performance has been pursued. ...
    • Design and Testing of Solid Armatures for Large-Bore Railguns 

      Price, J.H.; Fulcher, C.W.; Ingram, M.W.; Perkins, D.E.; Peterson, D.R.; Zowarka, Jr, R.C.; Pappas, J.A. (IEEE, 1989-01)
      A solid metal railgun armature called the Fishbone has been designed and tested at significant velocity, in both square- and round-bore configurations. The name `fishbone' describes a structure consisting of multiple, ...
    • Design and Testing of the Power Electronics for the Cannon Caliber Electromagnetic Gun System 

      Penney, C.E.; Hotz, T.J.; Kitzmiller, J.R.; Werst, M.D. (IEEE, 1997-01)
      The University of Texas Center for Electromechanics (UT-CEM) is in the final fabrication and testing phase of a power electronics system required to operate a skid mounted compulsator-driven railgun. Design goals for the ...
    • Design Considerations in a 60 Caliber Electromagnetic Railgun System 

      Fulcher, C. W.; Faidley, R. W.; Ingram, M. W.; Pratap, S. B.; Spann, M. L. (IEEE, 1989-01)
      A design code has been developed to aid in the development of a compact 60-caliber EM (electromagnetic) launcher system, based on a standard multivariable optimization technique. A lumped circuit model which was verified ...