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Asymmetrical magnetization in three-phase core type transformers
(1995-12-01)
The performance of the three-phase core type transformers, under AC/DC double excitation is discussed in this work. It is presented a mathematical model that considers the mutual coupling between phases and the magnetic ...
Transient heat diffusion problems with variable thermal properties solved by generalized integral transform technique
(2014-01-01)
In this work, studies of two-dimensional transient heat diffusion problems in domains of rectangular and elliptical geometries, submitted to boundary conditions of first kind, were carried out. For the problem formulation, ...
Influence of double excitation AC/DC in the reactive power demand of 3-phase transformers
(IEEE, 1999-12-01)
In this work it is discussed the performance of the reactive power demand in three-leg transformer core and three-phase transformer bank, under different conditions of AC/DC double excitation. In order to analyse the ...
Analysis of the Transformer Influence on a Three-Phase Dual Active Bridge DC-DC Converter
(Institute of Electrical and Electronics Engineers, 2016-07)
In this work, the impact of the high-frequency transformer on the three-phase dual active bridge DC-to-DC converter operation is investigated, using four transformers with different connections: star-star, delta-delta, ...
Solid state transformers: concepts, classification, and control
(MDPI, 2020)
Increase in global energy demand and constraints from fossil fuels have encouraged a growing share of renewable energy resources in the utility grid. Accordingly, an increased penetration of direct current (DC) power sources ...
A Resonant Tertiary Winding-Based Novel Air-Core Transformer Concept
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2012)
On the Weyl Transform with Symbol in the Gel'fand-Shilov Space and its Dual Space
(Universidad de La Frontera. Departamento de Matemática y EstadísticaUniversidade Federal de Pernambuco. Departamento de Matemática, 2010)
Reformulation of the fresnel transform to introduce sampling and recovery region control and its acceleration
(Instituto Nacional de Astrofísica, Óptica y Electrónica, 2010)