By Topic

IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 8 • November 1982

Filter Results

Displaying Results 1 - 8 of 8
  • Electromagnetic suspension and levitation

    Publication Year: 1982, Page(s):549 - 581
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (5289 KB)

    The phenomenon of levitation has attracted attention from philosophers and scientists in the past. Recent advances, notably in power electronics and magnetic materials, have focused this attention within the last decade on the application of electromagnetic suspension and levitation techniques to advanced ground transportation. Regardless of the fact that there is, in effect, a separate technology... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electromagnetic properties of a circular cylindrical coil in a set of planar ferromagnetic regions

    Publication Year: 1982, Page(s):582 - 589
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (884 KB)

    A general form of analysis is described for a solenoidal coil immersed in a set of ferromagnetic regions. The axis of the coil is perpendicular to the planar regions. Expressions are developed for power flow, impedance and normal force. Use is made of the Hankel transform and a transmission-line analogue. Results obtained agree with those calculated by previous authors. A phenomenon reported by E.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Current density in thin nonmagnetic tapes induced by the short-circuit current

    Publication Year: 1982, Page(s):590 - 592
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    A method of calculation of the current density in thin nonmagnetic tapes, which are generated by the short-circuit current flowing through parallel conductors, is presented. The method discussed is based on the integral formulas for the time-domain response of linear systems and the integral equation with respect to the space variable is applied. As an example, current density as a function of pos... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Relationship between various measurement techniques for void discharges

    Publication Year: 1982, Page(s):593 - 606
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1303 KB)

    The paper examines three insulation-measurement techniques, individual discharge measurements, conventional power frequency bridge techniques and the charge-transfer oscillogram; and shows the theoretical link between the results of each. The theoretical predictions are confirmed by experimental results on an artificial void model. This model demonstrates that, for a given voltage above discharge ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Effect of temperature on the impulse life expectancy of crosslinked polythene

    Publication Year: 1982, Page(s):607 - 610
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (400 KB)

    The Weibull statistical method is widely used to predict the failure of electrical insulation in terms of stress and time (or, in this case, the number of applied impulses) for a given temperature. In the present work the probability of breakdown has been determined for flat-disc samples of crosslinked polythene, subject to repeated application of impulse voltages for various stresses and temperat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Self-magnetic effects in a model gas-blast circuit breaker at very high currents

    Publication Year: 1982, Page(s):611 - 618
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (935 KB)

    Substantial self-magnetic effects are anticipated within the arc columns of gas-blast circuit breakers at very high currents (10¿¿100kA). The paper reports measurements of gas pressure within the arc column, at the tip of the upstream electrode in a model gas-blast circuit breaker, which, along with a knowledge of the ambient gas pressure, yields values for the pressure elevation due to self-magne... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of two-dimensional electrodes by the field-plane method

    Publication Year: 1982, Page(s):619 - 624
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (610 KB)

    An extension of the Schwarz-Christoffel transformation is applied to the design of two-dimensional electrodes, subject to specified field strengths, when placed in the vicinity of a plane insulating wall. It is shown that the nonclosure of the resulting profiles limits the degree of field uniformity that can be prescribed. Finally, a condition for closure is proposed and an example of a closing el... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Large-scale project management

    Publication Year: 1982, Page(s):625 - 633
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1337 KB)

    A forum on the total management of large-scale projects was organised within the Management & Design Division of the IEE,* with the objective of providing an interchange of ideas among engineers actively engaged in this field, at superior levels of responsibility. Part 1 of this record of the forum is a summary of the introductory address by Vice Admiral Sir Lindsay Bryson, who traced the hist... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.