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Industry Applications, IEEE Transactions on

Issue 4 • Date July 1981

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Displaying Results 1 - 23 of 23
  • IEEE Transactions on Industry Applications

    Publication Year: 1981 , Page(s): c1
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    Freely Available from IEEE
  • IEEE Industry Applications Society

    Publication Year: 1981 , Page(s): c2
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    Freely Available from IEEE
  • Table of contents

    Publication Year: 1981 , Page(s): 341
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  • The Industry Applications Society Annual Meeting Philadelphia, Pennsylvania October 5-9, 1981

    Publication Year: 1981 , Page(s): 342 - 343
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  • Engineering Challenges for the 1980's

    Publication Year: 1981 , Page(s): 344 - 348
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  • Dynamic Simulation of Coal Mine Electrical Power Systems

    Publication Year: 1981 , Page(s): 349 - 355
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1994 KB)  

    A flexible method for modeling mine electrical power systems is presented. Utilizing this simulation procedure, detailed analyses of bus voltages, transmission line power flows, and machine behavior are possible under conditions of steady-state or dynamic operation. Mining machine operation changes, as well as motor starting sequences, may be simulated. The model operates interactively, and the power system is configured as a user responds to program generated questions and requests. The theory behind the programming, as well as explanations of the models, are provided. An example is also given to demonstrate simulation capabilities. View full abstract»

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  • Load Model of a Dragline

    Publication Year: 1981 , Page(s): 356 - 361
    Cited by:  Papers (3)
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    The application of digital data acquisition and signal processing techniques to the identification of dragline load characteristics is described. The large quantity of data that can be obtained and analyzed so conveniently in this way permits meaningful statistical analysis of the effects of duty cycle, working conditions, and different operators. The power-factor regulator on the machine examined performed as expected. However, there are indications that faster response and alternative control strategies are worthy of investigation. View full abstract»

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  • Instantaneous Circuit Breaker Settings for the Short-Circuit Protection of Direct Current 300-and 600-V Trailing Cables

    Publication Year: 1981 , Page(s): 362 - 368
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2513 KB)  

    Present Federal regulations which specify maximum instantaneous circuit breaker settings for the short-circuit protection of coal mine trailing cables are discussed. Characteristics of mine power systems, which limit short-circuit current in dc trailing cables, and minimum expected short-circuit currents for dc 300- and 600-V trailing cables are analyzed. New maximum instantaneous circuit breaker settings, based on minimum expected short-circuit currents and typical circuit breaker tolerances, are proposed with emphasis on safety, and tests are cited. View full abstract»

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  • Instantaneous Circuit Breaker Settings for the Short-Circuit Protection of Three-Phase 480-, 600-, and 1040-V Trailing Cables

    Publication Year: 1981 , Page(s): 369 - 376
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2734 KB)  

    Present Federal regulations which specify maximum instantaneous circuit breaker settings for the short-circuit protection of coal mine trailing cables are discussed. The characteristics of mine power systems that limit short-circuit current in three-phase trailing cables are analyzed and minimum expected short-circuit currents for three-phase 480-, 600-, and 1040-V trailing cables are tabulated. New maximum instantaneous circuit breaker settings, based on minimum expected short-circuit currents and typical breaker tolerances, are proposed with emphasis on safety. Finally, atypical mine power systems are discussed and field tests cited. View full abstract»

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  • Laboratory Evaluation of Underground Coal Mine Trailing Cable Splices

    Publication Year: 1981 , Page(s): 376 - 381
    Cited by:  Patents (1)
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    Laboratory tests were developed for evaluating portable cable splices prior to their use in underground coal mines. The tests simulate mechanical and electrical destructive effects on cables supplying power to shuttle cars. Tests for splice tension, conductivity, flexibility, dielectric withstand, abrasion, and workmanship qualities are explained. View full abstract»

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  • The Ionization Potential of Carrier Transport Materials in Relation to the Photosensitivity of Double Layered Photoreceptors

    Publication Year: 1981 , Page(s): 382 - 386
    Cited by:  Papers (2)  |  Patents (1)
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    Double layered photoreceptors using low ionization potential molecules as the carrier transport layer (CTL) have been investigated. The ionization potential (lp) was estimated by the ¿ technique calculation and the polarographic oxidation potential. A good correlation was obtained between the photosensitivity and the lp value of the CTL. However this result could not be explained simply by the energy level misfit of the carrier generation layer (CGL) and the CTL. Styryl dye bases, cyanine dye bases, and oxazoles were selected as CTL materials on the basis of their transparency and high solubility in polymers. The photoreceptors using these CTL materials showed much higher sensitivities than the well-known polyvinylcarbazole- trinitrofluorenone (PVK-TNF) system. The peak value of the spectral sensitivity in the system composed of an oxazole, OX-2, and a disazo pigment, chlorodianeblue (CDB), was 0.17 m 2/mJ at 650 nm. View full abstract»

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  • New Applications of Electrostatic Technology to Control of Dust, Fumes, Smokes, and Aerosols

    Publication Year: 1981 , Page(s): 386 - 391
    Cited by:  Papers (5)
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    New applications of electrostatics to the control of dust are investigated. Technology for pushing systems to keep dust off optical systems and move particulates out of airstreams are discussed. Other electrostatic techniques for removal of water droplets and smoke are investigated. View full abstract»

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  • Ignition Hazards in Electrostatic Painting (A Review)

    Publication Year: 1981 , Page(s): 392 - 398
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    Some of the fundamental work related to the incendiary sparks and the areas of an electrostatic painting installation where incendiary sparks could develop are reviewed. Development of international scientific safety check standards is recommended to replace the current empirical methods found in various countries where electrostatic painting equipment is built and/or used. View full abstract»

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  • 1981 Committee Directory of the IEEE Industry Applications Society

    Publication Year: 1981 , Page(s): 392-a - xxx
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  • A Current-Source Inverter in the Secondary Circuit of a Wound Rotor Induction Motor Provides Sub- and Supersynchronous Operation

    Publication Year: 1981 , Page(s): 399 - 406
    Cited by:  Papers (9)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3894 KB)  

    A control system is described in which a current-source inverter is connected between the secondary winding of a three-phase slip-ring induction motor and the ac mains supply to give a variable speed sub- and supersynchronous operation. Control techniques developed in an earlier work were used to ensure fully stable operation over a very wide speed range with either driving or braking torque. Means are provided for power-factor control to compensate for the lagging power-factor effect of the inverter when operating into the large secondary electromotive forces (EMF) at high slip values. Experimental results are presented for a speed range from standstill to approaching twice synchronous speed for both driving and braking torque. There are no instabilities and the developed torque even at low frequencies near synchronous speed is steady with motor derating due only to the quasi-square wave current in the secondary circuit. View full abstract»

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  • A Cycloconverter - Synchronous Motor Drive for Traction Applications

    Publication Year: 1981 , Page(s): 407 - 418
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3828 KB)  

    An electric drive suitable for traction is described consisting of a cycloconverter and a synchronous motor. Essentially, the same system can be used with either single-phase or three-phase input with frequencies around 50-100 Hz. The motor speed range is not limited by the input frequency. The cycloconverter thyristors are commutated by the source voltage at low motor speed and by the motor electromotive force (EMF) at higher speed. The transition between the two regions is smooth and automatic. Only 16 low- switching speed thyristors are required for the single-phase input system. The short time overload capability of this drive at low speed is excellent, and full range regenerative, as well as dynamic braking, is readily accomplished. Compared to dc motors occupying the same space, three-phase ac motors, both synchronous and induction, offer higher output power, higher efficiency, and the elimination of brush and commutator maintenance. Compared to inverters, cycloconverters have higher efficiency and lower cost and weight. View full abstract»

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  • A Model of a Mercury Arc Lamp's Terminal V-I Behavior

    Publication Year: 1981 , Page(s): 419 - 426
    Cited by:  Papers (30)
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    A nonlinear dynamic model of the terminal voltagecurrent (V-I) characteristics of a mercury arc lamp operating at various power levels which can be used in the computer design of lamp ballast circuits is described. An experimental and efficient computational procedure is developed which determines the values for six model constants that cause the model to duplicate actual lamp behavior. This model is shown to be accurate within five percent in simulating lamp voltage and current waveforms when operated at frequencies from dc to 30 kHz. An example of a computer design of a high frequency ballast circuit is presented using the lamp model as the dynamic load in the ballast circuit. View full abstract»

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  • An Analysis of an Electromagnetic Mold for the Continuous Casting of Nonferrous Metals

    Publication Year: 1981 , Page(s): 427 - 432
    Cited by:  Papers (5)  |  Patents (1)
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    Electromagnetic molds are presently being used in the continuous casting of aluminum billets and slabs. Various theoretical models that can be used to predict electromagnetic pressure differentials and forces for this application are examined. Dimensionless pressure and force factors are first derived using a one-dimensional field model. These factors are then refined using a two-dimensional semi-infinite model. This latter model is also used to examine the effect that coil coupling has on the field strength, pressures and forces. Finally, the coupled circuit method is used to predict pressure distributions for an actual mold geometry, including the essential effect of the field shaping short-circuited turn (screen). The effect of varying the location of the inductor and screen is examined. View full abstract»

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  • Predicting Oil Ring Self-Lubricated Sleeve Bearing Temperature Rise and its Effect on Shaft Criticals

    Publication Year: 1981 , Page(s): 433 - 437
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    Several steps are involved in predicting the temperature rise within the babbitt/oil film of sleeve bearings. Initially, the viscous friction loss developed in the oil film is determined. This loss depends on the speed, length, and diameter of the journal, oil viscosity, and diametral clearance. A heat balance study then compares heat loss generation and dissipation rates. The final consideration is the ability of the oil rings to deliver the necessary oil flow rate. An approach for predicting sleeve bearing temperature rise and the adequacy of oil ring lubrication is described. It is shown that some of the design variables affecting the bearing temperature rise also influence the bearing oil film stiffness. The value of this stiffness plays a vital role in determining the shaft critical speed. View full abstract»

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  • Contact Design for Air Break AC Motor Starters

    Publication Year: 1981 , Page(s): 438 - 443
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    The processes used to determine the contact design, force, weight, shape, and temperature rise for air break ac motor starters are explained. The contact force is shown as the function of the welding current. The contact weight is determined by contact erosion. The contact shape is shown as the function of the contact weight. The temperature rise is given as the functions of the cross section and current. The given data are based on measured values. A sample contact design shows the application of this material. View full abstract»

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  • Our IEEE periodicals have only one competitor as an information source in electrotechnology [advertisement]

    Publication Year: 1981 , Page(s): 444
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  • IEEE Industry Applications Society

    Publication Year: 1981 , Page(s): 444-a
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  • Information for Authors

    Publication Year: 1981 , Page(s): 444-b
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Aims & Scope

The scope of the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.

Full Aims & Scope

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Editor-in-Chief
Carlton E. Speck