• Heavy-Duty Explosively Operated Pulsed Opening and Closing Switches: Reducing Cost and Turnaround Time 

      Peterson, D. R.; Price, J. H.; Upshaw, J. L.; Weldon, W. F.; Zowarka Jr, R. C.; Gully, J. H.; Spann, M. L. (IEEE, 1991-01)
      Improvements to heavy-duty, explosively operated opening and closing switches to reduce component cost, installation cost, and turnaround time without sacrificing reliability are discussed. Heavy-duty opening and closing ...
    • High Current and High Current Density Pulse Tests of Brushes and Collectors for Homopolar Energy Stores 

      Marshall, R.A.; (IEEE, 1981-03)
      The incentive exists to use high collector current densities in pulsed duty homopolar generators, the current densities of interest being in the range of 15--45 MA/m2. Tests have been conducted in which current pulses of ...
    • High Current Coaxial Pulse Transformer for Railgun Applications 

      Pappas, J.A.; Driga, M.D.; Weldon, W.F. (IEEE, 1985-06)
      A high-current air-core pulse transformer has been designed and fabricated. Its purpose is to reduce the output impedance (nominally 100 mn) of a 50-kJ, 1,000-~F capacitor bank for application to loads with impedances of ...
    • High Magnetic Field Generation Using Single Turn Coils 

      Werst, M.D.; Ingram, S.K.; Wehrlen, D.J.; Weldon, W.F. (IEEE, 1994-07)
      This study presents a new observation that links shaft signals to cracked rotor bars. Theoretical foundation for this observation is derived. Experimental results clearly confirm the theory that under loaded conditions, ...
    • High Power Density and High Efficiency Converter Topologies for Electric Ships 

      Herbst, J.D.; Engelkemeir, F.D.; Gattozzi, A.L. (IEEE, 2013-04)
      Power electronic converters are expected to be significant contributors to system mass, system loss, and system cost in the all-electric ship, and are therefore a significant area of interest. This paper investigates the ...
    • High Power Switches at the Center for Electromechanics at the University of Texas at Austin 

      Sledge, R.L.; Perkins, D.E.; Rech, B.M. (IEEE, 1989-01)
      Three high coulomb explosively actuated opening switches which have demonstrated reliability and fast switching in railgun experiments are presented. Two of these switches first provide a low conductivity path to transfer ...
    • High Pressure Acceleration of an Arc-Driven Metal Slug in a Railgun 

      Peterson, D.R.; Fowler, C.M.; Kerrisk, J.F. (IEEE, 1985-06)
      The successful acceleration in a railgun of an intact, arc-driven metal slug subjected to a peak pressure of - 0.7 GPa is described. The techniques and principles of accelerating metal slugs at very high pressures are ...
    • High speed induction motor and inverter drive for flywheel energy storage 

      Jordan, H.E.; Herbst, J.D.; Caprio, M.T.; Thelen, R.F.; Gattozzi, A.L.; Ouroua, A. (, undated)
      The use of flywheels to store energy is a technology which is centuries old. The confluence of several modern technologies has resulted in flywheels becoming a viable solution for the needs of the transportation, electric ...
    • High Speed, High Current, Copper-Finger Brushes for Pulsed Homopolar Generator Service 

      Walls, W. A.; (IEEE, 1986-03)
      ln continuing research into higher energy density, higher current rated pulsed homopolar generators (HPG's), solid copper fingers are explored as sliding electrical contacts to slip speeds of 300 m/s and collector area ...
    • High Strain Insulation Systems for Compulsator Rotors 

      Hahne, J.J.; Graf, C.; Kitzmiller, J.R.; Walls, W.A.; Brinkman, W.G.; Alexander, A.; Russo, D. (IEEE, 1999-01)
      As the power density requirement for new compulsator (CPA) designs increases, designers are driven to use more composites to reduce mass, spin the rotors faster to store more energy, and operate the machine at higher ...
    • The High Voltage Homopolar Generator 

      Price, J. H.; Gully, J. H.; Driga, M. D. (IEEE, 1986-11)
      A limitation of iron-core homopolar generators (HPG) is that the magnetic field strength and thus terminal voltage of the generator is dependent on the saturation limit of the material in the magnetic flux path. The Center ...
    • High Voltage Stator for a Flywheel Energy Storage System 

      Aanstoos, T.A.; Kajs, J.P.; Brinkman, W.G.; Liu, H-P.; Ouroua, A.; Hayes, R.J.; Hearn, C.; Sargent, J.; Gill, H. (IEEE, 2001-01)
      The University of Texas at Austin Center for Electromechanics (UT-CEM) has designed and conducted component test/development for a flywheel energy storage system for pulsed loads and mobility load leveling in a tactical ...
    • High-Current Busbars for a Prototype Homopolar-Toroidal Magnet System for Fusion Ignition 

      Sledge, R.L.; Brunson, G.W.; Carrera, R.; Hsieh, K.T.; Weldon, W.F.; Werst, M.D. (American Nuclear Society, 1991-05)
      The Ignition Technology Demonstration (ITD) is a full torus, scaled prototype of the 20 T toroidal field (TF) coil of the proposed fusion ignition experiment IGNITEX. The 0.06 scale in linear dimension is based on the ...
    • High-Speed Compulsator Stator Thermal Management 

      Liu, H-P.; Hahne, J.J. (IEEE, 2003-01)
      The compulsator stator armature winding includes multiple conductor layers. Each conductor layer is made of insulation wraps and transposed aluminum litz wire bundles with epoxy potting compound between the wires and the ...
    • High-speed flywheel and motor drive operation for energy recovery in a mobile gantry crane 

      Flynn, M.M.; McMullen, P.; Solis, O. (IEEE, 2007-03)
      This paper describes the results of experimental testing using a high-speed permanent magnet synchronous machine and its motor drive designed to recover potential energy in mobile gantry crane applications. Rubber-Tired ...
    • Higher frequency performance of stress-grading systems for HV large rotating machines 

      Hebner, R. (Conference on Electrical Insulation and Dielectric Phenomena, 2006)
    • Homopolar Generator Charged Inductors 

      Driga, M. D.; Nalty, K. E.; Zowarka, R. C.; Aanstoos, T. A.; Wu, A. Y.; Weldon, W. F. (IEEE, 1985-06)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has carried out several major experimental programs using homopolar generator (HPG)-charged inductors; namely, the fast discharge experiment ...
    • Homopolar Pulse Resistance Welding - A New Welding Process 

      Grant, G.B.; Featherston, W.M.; Keith, R.E.; Weldon, W.F.; Rylander, H.G.; Woodson, H.H.; Carnes, R.W.; Hudson, R.S. (, 1979-05)
    • Homopolar Pulsed Welding for Offshore Applications 

      Aanstoos, T. A.; Gully, J. H.; Harville, M. W. (, 1990-02)
      As a low impedance energy storage device, the pulsed homopolar generator (HPG) is capable of delivering a multimegawatt, megampere-current pulse into a resistive or inductive load with high efficiency. Such HPGs have been ...
    • Homopolar Pulsed Welding of API Line Pipe 

      Haase, P.W.; Eliezer, Z.; Carnes, R.W.; Harville, M.W.; Gully, J.H.; Trevisan, R.E. (, 1992-03)
      Homopolar pulse welding is a welding process that is being developed to rapidly join API line pipe. This process has particular potential for application in offshore pipeline construction utilizing the J lay method. The ...