Browsing CEM Conference Proceedings by Issue Date
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Finite Element Analysis of Coupled Electric, Magnetic and Dynamic Problems
(197608)A finite element method for the solution of a coupled electromagnetic and mechanical problem is presented. A typical problem that of a fast discharging homopolar machine, is described. The weak form of the initial value ... 
Pulsed Energy Storage in Fusion Devices
(197610)Research and development on pulsed energy technologies primarily for pulsed highbeta fusion systems, is described. Systems studies at Los Alamos and elsewhere have served to define these required technologies, which include ... 
One Millisecond Discharge Time Homopolar Machine (FDX)
(197611)All information now available concerning fast discharge homopolar machines is only theoretical. No such machine has ever been built and existing electrical machines do not approach the extremely severe conditions required ... 
Preliminary Engineering Design of a Pulsed Homopolar Generator Power Supply
(IEEE, 197611)A 200 megajoule 500 volt homopolar generator system is proposed as the inertial storageconversion device for the Texas Experimental Tokamak (TEXT). The initial engineering design of a 50 megajoule 125 volt homopolar ... 
Applying a Homopolar Power Supply to a Tokamak
(197611)The new Texas Experimental Tokamak (TEXT) will use homopolar generators as a pulsed power source. The high current, low voltage output of such a source calls for unusual solutions to achieve a proper match to toroidal toil ... 
Resistance Welding Using Homopolar Generators as Power Supplies
(197611)The University of Texas Center for Electromechanics (CEM) was originally formed to address the pulsed power requirements in the nuclear fusion research areas. It was determined that inertial energy storage using homopolar ... 
Pulsed Power from Inertial Storage with Homopolar Machines for Conversion
(197611)Because of its simplicity, an inertial energy storage with a homopolar machine for conversion can provide a relatively inexpensive pulsedpower supply for some important applications. The fundamental principles of operation ... 
Inertial Energy Storage Research at The University of Texas at Austin
(197611)During the past few years the Energy Storage Group at the University of Texas has been doing research on the design, theory, and application of homopolar machines. Two machines (0.5 MJ and 5.0 MJ} have been built and a ... 
Magnetic Field Calculations for HighEnergy Pulsed Power Supplies
(197611)The accurate calculation of the magnetic fields steady or rapidly varying is extremely important in designing pulsed power supplies for controlled thermonuclear fusion experiments, lasers, etc., where the traditional ... 
Magnetics and Superconducting Coil Design of a 10 MJ, Fast Discharging Homopolar Machine
(197708)The design of the magnetic circuit and the superconducting coil of a 10MJ homopolar machine is presented. The machine isof the tworotor drum type releasing its kinetic energy within 30 ms into an inductive load. The ... 
Electromagnetic Torques and Forces Due to Misalignment Effects and Eddy Currents in the Homopolar Generator Power Supply for the Texas Experimental Tokamak
(197710)Asymmetries in the applied magnetic field due to manufacturing tolerances and rotorstator misalignments can cause significant forces and moments in a homopolar generator. Parasitic eddycurrents in the rotor, brushes and ... 
Methods for Producing the Plasma Initiation Pulse in Ohmic Heating Circuits in Tokamak Power Reactors: Resistive Dissipation, Transient Inductive Storage, and Transient Capacitive Storage
(197710)The plasma initiation phase occurring at the beginning of the operating cycle of a tokamak has the role of transforming a weakly ionized high resistance gas into a low resistance plasma type discharge. A plasma initiation ... 
Test Data on Electrical Contacts at High Surface Velocities and High Current Densities for Homopolar Generators
(197710)Test data is presented for one grade of copper graphite brush material, Morganite CMlS, over a wide range of surface velocities, atmospheres, and current densities that are expected for fast discharge (<l00 ms) homopolar ... 
Circuit and Magnetic Analysis for a System of Faraday Rotator Coils Driven by a Two Spool, FourRotor Homopolar Generator
(197710)As part of a cost optimization study, a computer based circuit analysis is performed to determine the energy storage requirements a homopolar generator must meet to drive an inductive load of Faraday rotator coils, which ... 
System Engineering and Design of a Pulsed Homopolar Generator Power Supply for the Texas Experimental Tokamak
(197710)The design of a homopolar generator power supply for the Texas Experimental Tokamak (TEXT) is presented. Four seriesconnected disk type homopolar machines serve as inertial energy storage and conversion devices to supply ... 
Design, Fabrication and Testing of a Fast Discharge Homopolar Machine (FDX)
(197710)The Fast Discharge Experiment (FDX) is a 0.36 MJ, 200 V homopolar machine designed to discharge in one millisecond. All components, including dual brush actuation systems, a roomtemperature 2 x 106 At pulsed copper coil, ... 
A Metallic Contact, Fast Closing, HighCurrent Switch
(197710)The proposed fastdischarge experiment (FDX) to be conducted on a special homopolar machine by the Center for ElectroMechanics at the University of Texas requires for current initiation a making switch capable of carrying ...