Results 301 to 310 of about 37,003 (356)

Transforming transformers [superconducting windings]

IEEE Spectrum, 1997
Use of high-temperature superconducting (HTS) windings may soon turn power transformers into compact high-performers on good terms with the environment. The potential for HTS transformers is being examined in major design and hardware development programs by several teams of engineers and scientists worldwide.
S.P. Mehta, N. Aversa, M.S. Walker
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Wind-Power Transforming Systems

Journal of Mathematical Sciences, 2001
Summary: In this article, we give a brief account of theoretical and experimental investigations, as well as engineering designs, of different types of rotors (propeller-type rotors and Darrieus-type rotors). In numerical studies, we used the vortex lattice method.
Kopeika, O. V., Tereshchenko, A. V.
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Split winding transformers

Electrical Engineering, 1934
A discussion of the application of and advantages derived from the use of split winding transformers for separating bus sections and For avoiding undue concentration of power from high voltage lines. An explanation is given of the characteristics of these units with respect to the reactances and the effect of load unbalance on the windings.
D. D. Chase, A. N. Garin
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An Open-End Winding Hybrid Transformer

2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2020
This paper deals with a novel hybrid transformer configuration able to face power quality issues occurring on modern distribution grids integrating distributed generation from renewable energy sources and non-linear power electronic loads. The proposed system encompasses a three-phase distribution transformer with secondary windings arranged according ...
Foti S., De Caro S., Testa A., Tornello L. D., Scelba G., Cacciato M.   +5 more
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Power Transformer With Superconducting Windings

[1993] Digests of International Magnetics Conference, 1993
A 330-kVA power transformer with superconducting windings is discussed. A niobium-titanium based superconducting wire optimized for AC applications was used in the windings. The transformer worked according to its design at rated power. The total heat input to the liquid helium bath at this power was 9.4 W, of which the AC losses dissipated in the ...
S. Hornfeldt, O. Albertsson, D. Bonmann, F. Konig   +3 more
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Wind Wave Transformation

1989
Wave-induced velocities are the primary driving force for littoral sand transport. For this reason, a major component of the NSTS program was to measure wave associated velocity and elevation fluctuations. A description of the shoaling wave transformation is a necessary ingredient in the development of any sediment transport model.
Edward B. Thornton, R. T. Guza
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Three-Winding Transformer Ring-Bus Characteristics

Transactions of the American Institute of Electrical Engineers, 1942
SUCH hydroelectric projects as the Boulder Dam, Grand Coulee, and that proposed for the St. Lawrence River present serious power limit and short-circuit problems. Each of these developments will be capable of producing over 1,000,000 kw, part of which for each case must be transmitted over 200 miles.
G. W. Bills, C. A. Macarthur
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Power Transformers With Concentric Windings

Transactions of the American Institute of Electrical Engineers, 1936
The influence of basic engineering principles on the evolution of the concentric winding type of high voltage power transformer during the past 2 decades is discussed in this paper with particular reference to 55,000 kva water cooled transformers which will step up 16.3 kv to 287.5 kv at the Boulder Dam power plant.
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Winding topology for transformers

IEEE Transactions on Electromagnetic Compatibility, 1988
As one factor to improve the high-frequency performance of pulse transformers, the reduction of the leakage inductances associated with leakage flux between primary and secondary windings is addressed. The author introduces the concept of making such windings out of coaxial (or higher-order multiaxial) cables, with the outer shields of primary and ...
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Gauge transformations with fractional winding numbers

Physical Review D, 1996
The role which gauge transformations of noninteger winding numbers might play in non-Abelian gauge theories is studied. The phase factor acquired by the semiclassical physical states in an arbitrary background gauge field when they undergo a gauge transformation of an arbitrary real winding number is calculated in the path integral formalism assuming ...
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