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Industry Applications, IEEE Transactions on

Issue 6 • Date Nov. 1978

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Displaying Results 1 - 25 of 29
  • Table of contents

    Publication Year: 1978, Page(s): c1
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  • IEEE Industry Applications Society

    Publication Year: 1978, Page(s): c2
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  • 1978 Industry Applications Society Awards

    Publication Year: 1978, Page(s): 461
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  • The Ambience for Progress

    Publication Year: 1978, Page(s):462 - 464
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  • Protection Zone for Buildings Against Lighning Strokes Using Transmission Line Protection Practice

    Publication Year: 1978, Page(s):465 - 469
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1191 KB)

    The nature of the zone of protection of structures from an elevated rod or wire, inadequately defined in the past, can be determined with high reliability using data developed by E.R.Whitehead of the Illinois Institute of Technology under contract from the Edison Electric Institute for the protection of high-voltage electric transmission lines. The vertical boundary of this zone of protection is n... View full abstract»

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  • Discussion

    Publication Year: 1978, Page(s):469 - 470
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  • Overcyrrent Relay Coordination for Double-Ended Industrial Substations

    Publication Year: 1978, Page(s):471 - 481
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3406 KB)

    Overcurrent coordination details for phase, ground, and reverse current relays as applied to double-ended substations supplying three-wire low-resistance grounded medium-voltage industrial distribution systems with predominantly induction motor loads are discussed. Emphasis is on the National Electric Code (NEC) limitations to the pickup of phase overcurrent protective devices, the phase coordinat... View full abstract»

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  • Modem AC Generator Control Systems: Some Plain and Painless Facts

    Publication Year: 1978, Page(s):481 - 491
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3465 KB)

    The nomenclature, hardware operating principles, and performance considerations that influence the application and selection of modern generator control systems are reviewed. Certain critical but frequently misunderstood terms are identified and defined. Basic exciter, regulator, and governor systems are briefly described and compared. While generally applicable to control systems for generators o... View full abstract»

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  • Rural Use of Wind Power to Conserve Energy Resources

    Publication Year: 1978, Page(s):492 - 497
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2460 KB)

    Energy derived from the wind offers possibilities for supplementing rural power supplies. Basic concepts of wind-derived power and the possibilities of conserving energy, reducing electrical demand, and improving electrical system load factors are considered. View full abstract»

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  • Wire Mesh Floor Heating Systems

    Publication Year: 1978, Page(s):498 - 505
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2362 KB)

    The use of wire mesh floor heating systems to store heat developed from low-cost electrical energy during off-peak hours was investigated for large resource industries. These systems have the double function of heating and reinforcing. As current increases in the steel magnetic wire, resistance decreases due to skin effect. Current follows the shortest path along the longitudinal wires with relati... View full abstract»

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  • Point-Source Corona Current Distribution in an External Field

    Publication Year: 1978, Page(s):506 - 509
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1425 KB)

    A simple expression is derived that describes the spreading of the current stream stemming from a point corona electrode situated in a uniform external field. The analysis assumes a uniform current density in the stream, constant mobility, and constant longitudinal field, and solves the equations of continuity and Poisson. Formula accuracy is determined to be about 10 percent by comparison with cu... View full abstract»

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  • Performance Characteristics of Alpha-Particle Corona-Streamer Counter

    Publication Year: 1978, Page(s):510 - 515
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3002 KB)

    Alpha-particle wire-plate corona counters in air can be operated either in the spark or in the corona-streamer modes. The streamer mode is preferred over the spark mode since it has the advantages of low dead time and the absence of electrode corrosion by sparking. An analysis of the alpha-particle corona-streamer counter is described. The alpha-particle triggered corona pulse characteristics (e.g... View full abstract»

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  • Dielectric Strength of Compressed Insulating Gases and their Mixtures

    Publication Year: 1978, Page(s):516 - 522
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1687 KB)

    A method is developed for computing the discharge threshold voltages in SF6, N2 as well as their mixtures above atmopheric pressure. In electronegative gases, and for both uniform and nonuniform field gaps of positive polarity, there is a critical pressure above which field emission from the cathode surface has a significant effect. The method of calculation is based on the condition necessary for... View full abstract»

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  • The Radius of the Visible Ionization Layer for Positive and Negative Coronas

    Publication Year: 1978, Page(s):523 - 525
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1585 KB)

    An experimental analysis of the size of the visible ionization layer of a dc corona discharge is presented for both positive and negative polarities in a coaxial cylinder geometry. The analysis of the steady-state corona layer is based on wire size ranges from 0.58-0.17 mm. The resulting graphs provide a reasonable estimate of the radius of the corona layer for corona currents from inception to ne... View full abstract»

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  • Electrostatic Separation of Fine Particles in Vibrated Fluidized Beds

    Publication Year: 1978, Page(s):526 - 530
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4067 KB)

    Very fine particles which cannot be fluidized by means of a flowing gas alone because of entrainment may be effectively individualized and retained in the bed through a combination of gas at low rate flow and mechanical vibrations of selected frequency and amplitude. A mixture of very fine particles may be fluidized and successfully separated and/or concentrated by means of electrostatic fields. R... View full abstract»

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  • The Formation of Sparks of Minimum Ignition Energy

    Publication Year: 1978, Page(s):530 - 536
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6793 KB)

    A study has been made of incendiary discharges with minimum energy and between metal electrodes. The circuit used has a characteristic relaxation time smaller than the time required to distinquish several successive stages in spark formation. Examples are provided to show that the character and duration of each stage as well as the possibility to produce a hot gas channel depend both on the gas an... View full abstract»

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  • Electrostatic Current Generator Having a Disk Electret as an Active Element

    Publication Year: 1978, Page(s):537 - 540
    Cited by:  Papers (18)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1648 KB)

    An electrostatic current generator having a disk electret as the active element is described. The electret consists of two oppositely polarized half-disks producing an electric field normal to the plane of the electret. The electret constitutes the rotor of the generator and is located between two pairs of conducting half-disks which constitute the stator of the generator. The field of the electre... View full abstract»

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  • Electromagnetic Radiation of a Gas Discharge Arising when Separating Two Dielectrics

    Publication Year: 1978, Page(s):541 - 543
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (671 KB)

    Electromagnetic radiation accompanying the breaking of contact between polymer films (such as cellulose esters, polyvinylchloride, and rubber), the surface of dielectrics (such as glass, polyethyleneterephthalate), and a conductor (e.g., steel) in both the visible and radio-frequency ranges is studied. The experiments were conducted at room temperature within the pressure range of 10-2 torr up to ... View full abstract»

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  • Emission Phenomena Accompanying the Triboelectrification Process in Vacuum

    Publication Year: 1978, Page(s):544 - 546
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    It was experimentally found that the triboelectrification of a dielectric is accompanied by the intense emission of high-energy electrons, both in the rolling friction and in the sliding friction. A detailed study was done in the electron emission during the course of triboelectrification in the process of mutual rolling of two dielectric rolls. The experimental results have shown that in triboele... View full abstract»

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  • Thyristor Commutation in DC Choppers - A Comparative Study

    Publication Year: 1978, Page(s):547 - 558
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1753 KB)

    The typical dc chopper motor controller consists of two thyristors, two or three diode rectifiers, a commutating capacitor, and one or more commutating inductances. The major art in circuit design is selecting the most suitable configuration for the given application, particularly the location of the inductances. It is desirable to minimize the inductance in certain loops and to carefully choose t... View full abstract»

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  • Linearization of the Transfer Characteristic of a Phase- Controlled Converter Under Discontinuous Conduction

    Publication Year: 1978, Page(s):559 - 564
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1689 KB)

    An open-loop control circuit is described which, in conjunction with a cosine wave crossing technique, provides a linear transfer characteristics of a phase-controlled converter under both continuous and discontinuous conduction, regardless of ¿L/R values of the load. The nonlinear transfer characteristic between the signal and the output voltage at discontinuous conduction has been counteracted ... View full abstract»

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  • A DC Motor Control System for Electric Vehicle Drive

    Publication Year: 1978, Page(s):565 - 572
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2802 KB)

    A control system of a dc separately excited motor for electric vehicle drive is described. The armature of the motor is controlled by a thyristor chopper, whereas the field is regulated by a highfrequency transistor chopper. The control scheme combines the advantages of both series and shunt motors and permits maximum possible acceleration within the transient thermal ratings of the motor. In addi... View full abstract»

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  • A Modern Chopper Propulsion System or Rapid Transit Application with High Regeneration Capability

    Publication Year: 1978, Page(s):573 - 580
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2788 KB)

    Rapid transit propulsion system requirements are becoming more stringent as increased emphasis on reducing energy consumption, minimizing environmental pollution, increasing safety, and improving creature comforts are being considered. In order to meet these new, sometimes mutually exclusive, requirements, considerable detail must be paid to the overall car system. This fact is not particularly no... View full abstract»

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  • Current-Source Double DC-Side Forced Commutated Inverter

    Publication Year: 1978, Page(s):581 - 593
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4150 KB)

    DC-side commutated inverters are very attractive due to their simplicity and efficient use of the commutation circuit. A new current-source commutated inverter of this type equally applicable to both single and multiphase bridge configurations is considered. Simultaneous turn-off of all bridge thyristors allows ample possibilities for programming the commutation sequence. The behavior of a threeph... View full abstract»

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  • A New Concept for Improving the Performance of Phase-Controlled Converters

    Publication Year: 1978, Page(s):594 - 603
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2873 KB)

    High-power phase-controlled converters suffer from several fundamental disadvantages. They inject current hannonics into the input ac mains due to their nonlinear characteristics, thereby distort the supply voltage waveform, and demand ractive power from the associated ac power systems at retarded firing angles; also the output voltage is not smooth dc but contains superimposed harmonic ripples. A... View full abstract»

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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.

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Carlton E. Speck