Proceedings ArticleDOI
Hybrid Transformer Model for Transient Simulation: Part I - Development and Parameters
B.A. Mork,F. Gonzalez,Dmitry Ishchenko,D.L. Stuehm,Joydeep Mitra +4 more
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TLDR
In this article, a topologically correct hybrid transformer model for low and mid-frequency transient simulations is developed, utilizing a duality-based lumped-parameter saturable core, matrix descriptions of leakage and capacitive effects, and frequency-dependent coil resistance.Abstract:
Summary form only given. A new topologically-correct hybrid transformer model is developed for low- and mid-frequency transient simulations. Power transformers have a conceptually simple design, but behaviors can be very complex. Selection of the most suitable representation for a given behavior depends on the type of transformer to be simulated, the frequency range, and other factors such as the internal design of the transformer and available parameters or design data. Here, a modular model suitable for frequencies up to 3-5 kHz is developed, utilizing a duality-based lumped-parameter saturable core, matrix descriptions of leakage and capacitive effects, and frequency-dependent coil resistance. Implementation and testing of this model was done for 15-kVA 208D-120Y 3-legged and 150 kVA 12, 470Y-208Y 5-legged transformers. The basis and development of the model is presented, along with a discussion of necessary parameters and the approaches for obtaining them.read more
Citations
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Journal ArticleDOI
Transformer Design and Optimization: A Literature Survey
TL;DR: In this article, the authors conduct a literature survey and reveal general backgrounds of research and developments in the field of transformer design and optimization for the past 35 years, based on more than 420 published articles, 50 transformer books, and 65 standards.
Journal ArticleDOI
Transformer Model for Inrush Current Calculations: Simulations, Measurements and Sensitivity Analysis
TL;DR: In this paper, a transformer model for low and mid-frequency transient studies with a focus on the behavior in saturation and the estimation of residual fluxes is presented, and a comparison of the simulation results with analytical calculations and measurements proves the capability of the model to accurately represent energization and de-energization transients of a threelegged core distribution transformer.
Journal ArticleDOI
Duality Derived Transformer Models for Low-Frequency Electromagnetic Transients—Part I: Topological Models
Saeed Jazebi,S. E. Zirka,Mathieu Lambert,Afshin Rezaei-Zare,Nicola Chiesa,Y.I. Moroz,Xusheng Chen,Manuel Martinez-Duro,C.M. Arturi,E. P. Dick,Arun Narang,R.A. Walling,Jean Mahseredjian,J. A. Martinez,F. de Leon +14 more
TL;DR: In this article, the authors provide clarity to physical concepts used in the field of transformer modeling, to dispel common misconceptions regarding numerical instabilities, and to present unified modeling techniques for low-frequency transients.
Journal ArticleDOI
Mitigation of Inrush Currents in Network Transformers by Reducing the Residual Flux With an Ultra-Low-Frequency Power Source
TL;DR: In this paper, a methodology for the reduction of the residual flux in network transformers is proposed for the mitigation of large inrush currents taken by numerous transformers when a long feeder is energized.
Journal ArticleDOI
Impacts of Transformer Core Hysteresis Formation on Stability Domain of Ferroresonance Modes
TL;DR: In this article, the impact of hysteresis loop formation on the stability domain of a voltage transformer (VT) was investigated based on four different hysteretic and two single-valued polynomial models.
References
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Journal ArticleDOI
Theory of ferromagnetic hysteresis
David Jiles,David L. Atherton +1 more
TL;DR: In this paper, a mathematical model of the hysteresis mechanisms in ferromagnets is presented based on existing ideas of domain wall motion including both bending and translation, which gives rise to a frictional force opposing the movement of domain walls.
Journal ArticleDOI
Transformer Design and Optimization: A Literature Survey
TL;DR: In this article, the authors conduct a literature survey and reveal general backgrounds of research and developments in the field of transformer design and optimization for the past 35 years, based on more than 420 published articles, 50 transformer books, and 65 standards.
Journal ArticleDOI
Five-legged wound-core transformer model: derivation, parameters, implementation and evaluation
TL;DR: In this article, an equivalent circuit for the widely used three-phase grounded wye to grounded-wye five-legged wound-core distribution transformer is derived using duality transformations.
Journal ArticleDOI
Transformer Model for Inrush Current Calculations: Simulations, Measurements and Sensitivity Analysis
TL;DR: In this paper, a transformer model for low and mid-frequency transient studies with a focus on the behavior in saturation and the estimation of residual fluxes is presented, and a comparison of the simulation results with analytical calculations and measurements proves the capability of the model to accurately represent energization and de-energization transients of a threelegged core distribution transformer.