Stator Winding Systems with Reduced Vibratory Forces for Large Turbine-Generators

Holley, C. H.; Willyoung, D. M.

doi:10.1109/tpas.1970.292777

Cited by 15 publications

(2 citation statements)

References 2 publications

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“…In the study, it has been found that transformer cost increments (relative to a three-phase application of the same KVA and voltage rating) could be limited to 5 % or less in instances when single-phase transformer banks were necessary anyhow due to the rating or high-side voltage level. Even with the further cost increments associated with the need for two sets of isolated three-phase bus (of half-current), these costs did not seem excessive relative to the improved reliability that was expected due to decreased vibratory forces on the windings and other advantages [11,12]. The complete power generation scheme is shown in Fig.…”

Section: Power Generation Schemementioning

confidence: 99%

Analysis of a Saturated Multi-Phase (Six-Phase) Self-Excited Induction Generator

Singh¹,

Yadav²,

Saini³

2006

International Journal of Emerging Electric Power Systems

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The present paper is concerned with the application of the equations of a saturated smooth air-gap machine to the analysis of the transient behavior of a multi-phase (six-phase) self-excited induction generator (SEIG). In the analytical model (d-q axis model), the effects of common mutual leakage inductance between the two three-phase winding sets have been included. A detailed experimental investigation of self-excitation process, loss of excitation and re-excitation, switching-in of pure resistive load without, and with series compensation (short shunt) is also included in this paper.

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Section: Power Generation Schemementioning

confidence: 99%

Analysis of a Saturated Multi-Phase (Six-Phase) Self-Excited Induction Generator

Singh¹,

Yadav²,

Saini³

2006

International Journal of Emerging Electric Power Systems

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“…The choice between them in a particular case depends on a full technical and economic analysis of the many factors involved. 41 ' 49 ' S0 Complete encapsulation of the end windings has been proposed, but coil replacement in the event of insulation failure would be very difficult, and the already vulnerable area of mechanical discontinuity between the slot portion and the end windings would almost certainly be subjected to additional stress. It is therefore unlikely that such a system will be used.…”

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confidence: 99%

Recent trends in turbogenerators

Vickers¹

1974

Proc. Inst. Electr. Eng. UK

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The paper begins with an historical account of the evolution of the turbogenerator, emphasing the landmarks in its development. Against the background of probable future requirements, a critical assessment is made of current design philosophies and their limitations are examined. The barriers to advancement in technology, in materials, and in physical size and weight are identified and the resulting trends in design investigated. The interdependence of generator and transmission-system characteristics is considered in relation to likely advances in generator design. The problem areas of stator core and winding vibration and core-end heating are reviewed. Developments in structural materials, cooling systems, insulation and handling and transport are covered. Recent developments in excitation systems, notably in the 'brushless' concept, that have obviated the need for sliprings are also examined. The final section includes a review of the potential advantages and practical problems associated with the possible use of design principles involving increasingly radical departures from current established practice. These progress from the completely liquid-cooled machine without hydrogen, prototypes of which have already been manufactured, through the more or less conventional generator but with stator and rotor windings accommodated in the airgap, to designs using evaporative and cryogenic cooling principles. An extensive bibliography is included.

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Six-phase (multiphase) power systems: Some aspects of modelling and fault analysis

Tiwari

Singh

1983

Electric Power Systems Research

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Stator Winding Systems with Reduced Vibratory Forces for Large Turbine-Generators

Cited by 15 publications

References 2 publications

Analysis of a Saturated Multi-Phase (Six-Phase) Self-Excited Induction Generator

Analysis of a Saturated Multi-Phase (Six-Phase) Self-Excited Induction Generator

Recent trends in turbogenerators

Six-phase (multiphase) power systems: Some aspects of modelling and fault analysis

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