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An Open-End Winding Hybrid Transformer
2020 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2020This 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. +5 more
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Power Transformer With Superconducting Windings
[1993] Digests of International Magnetics Conference, 1993A 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 +3 more
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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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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, 1942SUCH 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, 1936The 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, 1988As 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, 1996The 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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1989
The main purpose of the magnetic equivalent circuit method is to relate phase fluxes to phase currents of an electric machine in a way that will as best as possible reflect all peculiarities of a device. Node potential equations that were derived in the previous chapter helped establish connections between magnetic scalar potentials in a machine and ...
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The main purpose of the magnetic equivalent circuit method is to relate phase fluxes to phase currents of an electric machine in a way that will as best as possible reflect all peculiarities of a device. Node potential equations that were derived in the previous chapter helped establish connections between magnetic scalar potentials in a machine and ...
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Winding Shape Optimization in Transformers
2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), 2019Fringing fields near air gaps in some high-frequency transformers produce significant excess proximity-effect winding loss. We introduce a method that optimizes the winding shape of multi-winding components to reduce these losses. The method accounts for the interactions between different windings and between the windings and the air gaps when the ...
Ralf H. Carestia +2 more
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Wind farms modeling files transformation
2010 IEEE International Conference on Automation, Quality and Testing, Robotics (AQTR), 2010Wind farms modeling software are very important in the process of planning, dimensioning, and developing a wind farm. These applications offer valuable information about some key factors in the process of wind farm creation. The platforms do not offer information just about the placement of the wind farms but also about wind condition, wind resource ...
D. I. Gota, D. Petreus, L. Miclea
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