By Topic

Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry

Issue 6 • Date Jan. 1954

Filter Results

Displaying Results 1 - 14 of 14
  • Co-ordination of overvoltage and short-circuit protection for aircraft A-C systems

    Publication Year: 1954, Page(s):369 - 374
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (586 KB)

    The purpose of a circuit protector (CP) is to clear faults and thus permit the remainder of the system to continue normal operation. The function of overvoltage protection is to prevent damage to utilization equipment by de-energizing the generator when system overvoltage exists. Proper co-ordination is necessary to prevent nuisance tripping of the overvoltage relay (OVR) during low-resistance fau... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Directional detection for parallel aircraft alternators

    Publication Year: 1954, Page(s):374 - 379
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (535 KB)

    Aircraft electric system designers have several methods available for providing generator protection. These include overcurrent devices (thermal and magnetic), differential current devices (balanced current and zone type), and directional sensing devices (the familiar reverse current cutout). View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The effects of abnormal conditions on aircraft, parallel A-C power systems

    Publication Year: 1954, Page(s):379 - 386
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (670 KB)

    The purpose of this paper is to call attention to system malfunctions which may occur on parallel-connected, aircraft, a-c electric power systems. These malfunctions must be considered when an integrated study is made of the protection and operation of these systems. A list and discussion of these malfunctions is presented. It is hoped that this paper will stimulate discussion which will provide m... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Continuous current capacity of bundled cables for aircraft

    Publication Year: 1954, Page(s):386 - 398
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1310 KB)

    Electric cables installed in aircraft are normally tied together in bundles for a portion of the cable run from the bus to the individual load device. As a consequence, the temperature of a particular cable depends not only on the current which it carries but also on the currents which flow simultaneously in other cables of the group. The problem of the current capacity of cables in bundles can be... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Control of metal build-up in minimum pressure sensitive contact systems

    Publication Year: 1954, Page(s):398 - 403
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (526 KB)

    The race for automaticity has allowed little time for simplification and cost reduction. We have automatic jet engine control as a function of ten parameters employing 30 vacuum tubes. But do we have adequate reliability? In view of these problems, this paper investigates the simplest information sensing and control element for servomechanisms ¿ sensitive electric contacts. Contact protection and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Parallel operation of aircraft A-C generators

    Publication Year: 1954, Page(s):403 - 407
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    In military aircraft, the growth of electric power consumption has been very large. The load requirements have led to the desirability of developing a-c systems rather than producing power as direct current and then converting to meet the a-c load requirements. For the most part, single-generator systems or combinations of single-generator systems using split-bus arrangements have been used. Need ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Differential reactive current protection relay

    Publication Year: 1954, Page(s):407 - 412
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    The past few years have witnessed the increasing use of alternating current in large military aircraft, to the point where systems of paralleled alternators are required to meet the load demand. Such systems have problems and malfunctions of a type not encountered with isolated alternators or with paralleled d-c generators. As a result, new control and protective techniques must be developed for p... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Methods for prediction of steady-state performance for unbalanced regulated 3-phase generators

    Publication Year: 1954, Page(s):413 - 422
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (829 KB)

    Based on simultaneous solutions of algebraic equations, resultant values of excitation voltage are obtained for a regulated a-c generator operating under unbalanced conditions. These equations result from a detailed consideration of the reaction to unbalance of the regulator system components. In general, solutions of the equations can be obtained graphically; in some cases, they can be attained a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New developments in differential-type hydraulic transmissions and controls

    Publication Year: 1954, Page(s):423 - 429
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1011 KB)

    The differential-type hydraulic transmission has been used as a constant speed drive for aircraft a-c generators for approximately 8 years. The experience gained in this time on both the B36 and P5M airplanes has been a major factor in establishing future aircraft electrical system and component requirements. However, the final decision to establish closer electrical system tolerances for voltage ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bibliography on feedback control

    Publication Year: 1954, Page(s):430 - 462
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4153 KB)

    This bibliography is an attempt to collect a reasonably complete set of references pertaining to the concept of feedback, its applications, and consequences, up to the year 1952. These references necessarily touch upon many fields of engineering and also contain a number of items on related topics. Although the material has been divided into a number of broad categories, it should be recognized th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Backlash in a velocity lag servomechanism

    Publication Year: 1954, Page(s):462 - 467
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (518 KB)

    The frequency response method of analysis of servomechanisms has been extensively applied in the analysis and synthesis of linear systems, and several studies have shown that useful results can be obtained in certain nonlinear cases. The application of the sinusoidal frequency response method to nonlinear systems has been based on the assumption that the input to the nonlinear element is sinusoida... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Determination of the maximum modulus, or of the specified gain, of a servomechanism by complex-variable differentiation

    Publication Year: 1954, Page(s):467 - 469
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (306 KB)

    A problem of frequent occurrence in servomechanism analysis and design is that of determining the maximum modulus Mm, and the angular frequency at which it occurs, of the over-all frequency-transfer function M(j¿) = C(j¿)/R(j¿). Those textbooks1¿4 which present a comprehensive, integrated account of basic servomechanism theory advance, in considerable detail, two procedures for determining the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A discussion of the detroit committee on electrolysis

    Publication Year: 1954, Page(s):469 - 471
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (277 KB)

    The Detroit Committee on Electrolysis is a voluntary organization of companies and municipal departments constituted for finding the best engineering solution to the electrolysis and corrosion problems confronting its members. There are over 25 cities and areas in the United States and Canada which have active electrolysis committees including New York, Chicago, Philadelphia, Detroit, Southern Ont... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Applications and industry index for 1953

    Publication Year: 1954, Page(s):472 - 476
    Request permission for commercial reuse | PDF file iconPDF (574 KB)
    Freely Available from IEEE

Aims & Scope

This Transaction ceased production in 1963. The current retitled publication is IEEE Transactions on Industry Applications.

Full Aims & Scope