Browsing by Subject "motor"
Now showing 1 - 4 of 4
- Results Per Page
- Sort Options
Item Drive System for the TEXT Upgrade Generators(IEEE, 1991-09) Herbst, J.D.; Jagger, J.W; Foster, D.L; Terry, D.R.The 18.75 MVA generators for the Texas Experimental Tokamak (TEXT) Upgrade will each be driven by a 298 kW electric motor. The motor will be coupled to the generator by a hydraulic transmission system. This paper describes the drive system, and discusses why it was chosen. Also included are a description of the computer simulation used to predict the drive system performance and the simulation results.Item The equivalent T circuit of the induction motor: its nonuniqueness and use to the magnetic field analyst(IEEE, 2006-04) Davey, K.R.The equivalent T circuit of an induction motor is found in every engineering motors book and is becoming increasingly important with the popularity of vector control. The values used in the circuit are used to dictate the necessary gating signals for the pwm inverter. It is the de facto standard bridge between the field analyst and the motor controller. These parameters are not unique. Force, energy, voltage, and secondary power dissipation can be shown to relate to the product of synchronous reactance and the coupling coefficient of the rotor and stator. The mutual reactance, the secondary inductance, and secondary resistance are non-unique. Yet this surprising feature can be used as a solution integrity check for the field analyst.Item Homopolar Motor-Generator for Inexpensive Inertial Energy Storage(1974-10) Woodson, H.H.; Rylander, H.G; Weldon, W.F; Driga, M.D; Becker, E.B; Tolk, K.M; Swanson, R.C; Ramage, C.M; Weldon, J.M; Hart, M.During the last six months, the Energy Storage Group has completed the assembly of the five megajoule homopolar motorgenerator and begun an extensive testing and evaluation program on the unit. The study of the fundamental limitations on homopolar machine discharge times has also been continued. Other projects completed by the group during the same period include the design fabrication, and initial testing of a 300,000 ampere making switch for short circuit testing of homopolar generators. A small, easily portable, working model of a homopolar motor-generator was also designed and constructed during this period and it has already proved very useful in presentations and demonstrations. Finally, a fluidic tachometer and a fluidic rotor position sensor have been designed and built for use in high magnetic fields where conventional electronic instruments have not proven to be usable.Item A Simulation-Based Design Study for a Locomotive Electric Power System(ELECTRIMACS-2002, 2002) Zhang, F.; Longoria, R.G.; Thelen, R.; Wardell, D.This paper presents a model and simulation for a conceptual locomotive power system consisting of a gas turbine driven synchronous alternator coupled to a rectifier – dc link – variable frequency inverter configuration. This system drives four induction traction motors and is integrated with a flywheel energy storage system (FESS). Such a system is meant to meet demands for rapid acceleration, speed maintenance on grades, recovery of braking energy and overall improved fuel efficiency. This system is under investigation at the Center for Electromechanics (CEM) at the University of Texas at Austin as part of its Advanced Locomotive Propulsion System (ALPS) project. In this paper, a modular, system level simulation of the ALPS prototype is presented, with emphasis placed on the use of power flow management.