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Single-Phase Power Transformer Formed Cores
Transactions of the American Institute of Electrical Engineers, 1950For many years power and distribution transformer cores were built of hot-rolled laminations assembled into a core structure. When cold-rolled, oriented strip steel was introduced into transformers, new types of distribution transformer cores were developed.
T. D. Gordy, G. G. Somerville
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Leakage flux in a single phase transformer
Journal of Magnetism and Magnetic Materials, 1984Abstract The effects of aluminium magnetic shielding and mild steel magnetic shunts on the leakage flux in the steel tank of a single-phase 50 Hz low power transformer have been investigated.
H.G. Kendall, A. Basak
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Single-Phase Universal Active Filter Without Transformer
APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition, 2007This paper presents an universal active filter for harmonic and reactive power compensation in single-phase system. It is a combined system of a series active filter and a shunt active filter without use of transformer. The proposed system is suitable for applications where the size is a critical factor.
C. B. Jacobina +4 more
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2019 5th International Conference on Advances in Electrical Engineering (ICAEE), 2019
There is an increasing interest within the industrial community to apply single-phase cycloconverters in variable speed drives and variable frequency applications. For variable speed drive application of cycloconverter to improve the power quality i.e., the harmonic components of the converter’s output voltage should be low which are always measured in
Ashish Mahanta, Shuvra Prokash Biswas
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There is an increasing interest within the industrial community to apply single-phase cycloconverters in variable speed drives and variable frequency applications. For variable speed drive application of cycloconverter to improve the power quality i.e., the harmonic components of the converter’s output voltage should be low which are always measured in
Ashish Mahanta, Shuvra Prokash Biswas
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Novel Zero-Sequence Blocking Transformer (ZSBT) Using Three Single-Phase Transformers
IEEE Transactions on Energy Conversion, 2013Zero-sequence blocking transformers (ZSBTs), used to block the zero-sequence components that are present in a three-phase system, are commonly built winding the three phases around the same core limb. They are difficult to construct, especially in high-power applications that use large cross-sectional cables, as they require a symmetrical winding ...
Aitor Laka +4 more
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Inrush Current Modeling in a Single-Phase Transformer
IEEE Transactions on Magnetics, 2010This paper introduces a proper model for ferromagnetic core which includes hysteresis, saturation, eddy current losses, and anomalous losses. This model can generate symmetrical and asymmetrical loops with high accuracy. An artificial neural network is used to present the major dc hysteresis loop and initial magnetization curve based on a set of ...
Jawad Faiz, Saeed Saffari
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Notes on parameter estimation for single-phase transformer
IEEE Transactions on Industry Applications, 2020This article investigates the inaccuracies of identifying parameters for a single-phase transformer. In addition, in this article, two new transformer parameter estimation algorithms based on recently developed optimization techniques, as well as an objective function, are proposed for the transformer parameter estimation to improve the estimation ...
Martin Calasan +4 more
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Ferroresonance modes determination of single-phase toroidal transformers
2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA), 2017The actual high incidence of the low-loss power transformers in the modern electric and electronic installations, increase the risk of the ferroresonance occurrence. This could be commonly triggered by a capacitive switching of the transformers. Consequently, significant overvoltages and overcurents are experienced by all the installation components ...
Emil Cazacu +2 more
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A Soft-Switching Single-Phase Transformer-Isolated Inverter
2018 5th International Conference on Electric Power and Energy Conversion Systems (EPECS), 2018This paper proposed a soft-switching single-phase transformer-isolation inverter with a transformer-isolated soft-switching dc link. The transformer-isolated soft-switching dc link provides electrical isolation function and soft-switching function on main power switches in inverter.
Chien-Ming Wang +3 more
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Harmonic analysis of ferroresonance in single-phase transformers
2012 IEEE 15th International Conference on Harmonics and Quality of Power, 2012Ferroresonance is a power quality problem that is characterized by distorted overvoltage and current waveforms. This paper reviews the ferroresonance problem associated with a circuit involving an unloaded transformer that is connected to a source through a capacitor, and solution methodologies. A common simplified method based on fundamental frequency
Xusheng Chen +2 more
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