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IEE Proceedings B - Electric Power Applications

Issue 2 • March 1981

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Displaying Results 1 - 7 of 7
  • Electrification of the Tyne and Wear Metro

    Publication Year: 1981, Page(s):81 - 91
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1411 KB)

    The Tyne and Wear Metro is the backbone of an integrated public transport system for Tyneside. The paper examines the background to the Metro, the power supply and overhead line equipment, and deals with the general technical considerations which have governed the design of the power system and equipment. Methods of constructions are also discussed, together with the control and operation of the s... View full abstract»

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  • Attenuation effects of under-track reinforcing on automatic train protection signalling systems

    Publication Year: 1981
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (932 KB)

    The aggregate of steel reinforcement in the concrete plinths and track bed of a particular masstransit railway is found topresent an attenuating environment to the ATP (automatic train protection) signalling system. An attempt is made to investigate the problem via two-dimensional field theory by solving Laplace's equation for the magnetic vector potential. The distributed AC parameters of the sec... View full abstract»

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  • Dedicated-microprocessor scheme for thyristor phase control of multiphase convertors

    Publication Year: 1981, Page(s):101 - 108
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1180 KB)

    A general-purpose dedicated-microprocessor firing controller scheme is proposed for multiphase thyristor convertors suitable for interfacing with microprocessor-based control systems. It can be described basically as an asynchronous equidistant firing scheme having fast response and including provisions for limit checks and nonlinearity compensation. The hardware and software organisation of an ex... View full abstract»

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  • Predicting the pullout torque/speed curve of variable-reluctance stepping motors

    Publication Year: 1981, Page(s):109 - 113
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (561 KB)

    An efficient numerical technique for predicting the pullout torque of variable-reluctance (VR) stepping motors is described. The method takes account of magnetic saturation and of nonlinearities in the drive circuit, and thus permits reliable prediction of the torque/speed curve to be achieved at the design stage. This is particularly valuable in studying the behaviour at high stepping rates where... View full abstract»

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  • Dynamic response of a power-transformer winding under axial short-circuit conditions

    Publication Year: 1981, Page(s):114 - 118
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (589 KB)

    A model for the dynamic response of a vertical transformer winding, considered as a continuous elastic solid, which produces a partial differential equation, is developed. This model is proposed as a simple means by which some of the many design requirements of large power transformers can be examined. An example is considered and initial and boundary conditions for the partial differential equati... View full abstract»

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  • Effects of 3rd-harmonic voltage content on dielectric losses of solid insulating materials

    Publication Year: 1981, Page(s):119 - 125
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (923 KB)

    Dielectric losses in solid insulating materials subjected to voltages containing 3rd harmonics are studied. By simple theoretical analysis, some curves are obtained showing the behaviour of the ratio between the dielectric losses in the distorted steady state and in a reference sinusoidal steady state, against 3rd-harmonic content. The reference sinusoidal voltage amplitudes were selected in two d... View full abstract»

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  • Inverter drive for switched reluctance motor: circuits and component ratings

    Publication Year: 1981, Page(s):126 - 136
    Cited by:  Papers (47)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1666 KB)

    A variable speed drive using a switched-reluctance motor permits a simpler and cheaper inverter than a PWM inverter for an induction motor. The various inverter circuit options are considered for singlewinding and bifilar-wound motors, noting the advantages of the bifilar 4-phase arrangement from the inverter's viewpoint. The inverter design process for a traction drive with a 3:1 constant power r... View full abstract»

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