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IEE Proceedings B - Electric Power Applications

Issue 2 • March 1983

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Displaying Results 1 - 10 of 10
  • Application of controlled flywheeling to the recovery bridge of a static Kramer drive

    Publication Year: 1983, Page(s):73 - 85
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1345 KB)

    The input and output conditions in a naturally commutated thyristor-bridge inverter can be improved in most respects by adopting the controlled flywheeling technique. Maximum advantage is gained at low DC side voltages, and this makes the technique especially suitable for use with the static Kramer drive. Substantial improvements in reactive-power consumption, system efficiency and power factor be... View full abstract»

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  • Determination of model parameters of synchronous machines

    Publication Year: 1983, Page(s):86 - 94
    Cited by:  Papers (22)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (881 KB)

    Until now, different assumptions have been made during the determination of model parameters of synchronous machines from the characteristic quantities obtained from measurements (or calculations). This can lead to considerable errors in the results of simulation for certain machines. The paper shows how one can analytically compute these model parameters rigorously from characteristic quantities,... View full abstract»

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  • Double-disc alternator with AC-side excitation

    Publication Year: 1983
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (615 KB)

    The paper describes an unusual form of alternator, which has a disc-type geometry, which uses AC-side excitation to provide brushless operation. Some of the merits and drawbacks of this form of machine are discussed. The alternator is free of the usual penalties associated with this type of machine, and in particular there are no auxilliary airgaps, and the main flux is heteropolar in action. Meth... View full abstract»

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  • The process of self excitation in induction generators

    Publication Year: 1983, Page(s):103 - 108
    Cited by:  Papers (25)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (655 KB)

    The phenomenon of self excitation in induction machines is examined and a physical interpretation of how self excitation occurs is presented. The important parameters are shown to be the shaft speed, the residual magnetism, the reduced permeability at low magnetisation, and the size of the capacitor connected to the machine. The results are important in applications where induction machines are us... View full abstract»

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  • Electrification of the midland suburban services

    Publication Year: 1983, Page(s):109 - 120
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1677 KB)

    The choice is reviewed of the 25kV AC system for the modernisation of the St. Pancras/Moorgate-Bedford suburban services, together with the achievements which have resulted in a reduction of the electrification fixed-equipment costs. Details are given of the traction power-supply arrangements and the electrification equipment installed on the project. View full abstract»

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  • Power-factor improvement in cage-rotor induction motors

    Publication Year: 1983, Page(s):121 - 129
    Cited by:  Papers (12)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (829 KB)

    Rotating-field theory is used to develop a generalised expression for a cage induction motor with any stator winding connection and any supply configuration. This expression is shown to indicate that a cage induction motor will always draw positive VArs from the supply. The possibility of improving the power factor by means of stator-excited harmonic fields is examined, and the theoretical possibi... View full abstract»

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  • A new pole-changing winding using star/star-delta switching

    Publication Year: 1983, Page(s):130 - 136
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (784 KB)

    A new pole-changing winding using star/star-delta switching is developed and is shown suitable for wide pole-ratio single-winding induction motors with pole combinations of the form (i) even/even and (ii) odd/odd pole pairs. Examples of 1:5 and 5:1 pole ratios are presented. Test results on laboratory-size machines for these pole ratios confirm the usefulness of the proposed schemes. The proposed ... View full abstract»

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  • Effects of machine parameter values on dynamic response and stability regions of doubly-fed cascade induction machines

    Publication Year: 1983, Page(s):137 - 142
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (576 KB)

    Doubly-fed cascade-connected induction machines (CCIMs), whether mounted in a single frame or otherwise, are capable of developing useful torque as brushless synchronous machines over a wide speed range. Such machines exhibit instability within certain regions of operation and may be insufficiently damped within others. This paper presents some of the loci of the dominant eigenvalues of the system... View full abstract»

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  • Erratum: Terminal behaviour of the uncontrolled R-L fed 3-phase bridge rectifier

    Publication Year: 1983
    IEEE is not the copyright holder of this material | PDF file iconPDF (41 KB)
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  • A simple digital control scheme for a DC motor

    Publication Year: 1983, Page(s):143 - 147
    Cited by:  Papers (17)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (572 KB)

    A simple control algorithm, based on a conditional branch-and-jump instruction set, for the speed control of a separately excited DC motor, is described. The proposed scheme incorporates direct digital control of the firing angle of the thyristors in the power amplifier and a new hybrid tachogenerator with a low ripple content. The very simple realisation of the control law allows sufficient time ... View full abstract»

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Aims & Scope

Published from 1980-1993, IEE Proceedings B contained significant and original contributions on the applications of electric power. The scope covered a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis were also included.

Full Aims & Scope