Results 31 to 40 of about 1,224 (273)
Simulation and Modeling of Detailed Load flow Analysis for the 400kVA and 132kVA Iraqi Grid
Journal of Engineering, 2023 A load flow program is developed using MATLAB and based on the Newton–Raphson method,which shows very fast and efficient rate of convergence as well as computationally the proposed method is very efficient and it requires less computer memory through ...
Ahmed Abdul Sahib Hashim
doaj +1 more source
The response of transformers to geomagnetically induced- like currents [PDF]
, 2014 Includes bibliographical references.This dissertation discusses the development and implementation of a rigorously developed protocol for characterizing and testing transformers with GIC-like currents based on their magnetization curve characteristics ...
Chisepo, Hilary K
core +1 more source
Modular DC‐DC auto‐transformer: Topology, operation, and system design
IET Power Electronics, 2021 Here, a modular DC‐DC auto‐transformer is proposed with a developed scheme of two‐port submodules. The proposed two‐port submodule is composed of six switches and single capacitor, and it is featured with three general working states.
Yang Chen +4 more
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IET Power Electronics, 2021 Conventional dc–dc boost converters have limited boosting capabilities, and the main switching device may suffer relatively high voltage stress and current stress. A novel transformerless dc‐dc boost converter is proposed in this paper.
Jiawei Zhao, Daolian Chen, Jiahui Jiang
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Evolution of structures and preconditions for transformers and reactors improvement via electromagnetic system circuit transformation (systems with laminated and twisted magnetic circuits) [PDF]
, 2011 Feasibility of transformers and reactors improvement on the basis of spatial structures of axial and radial electromagnetic systems, as well as hexagonal and octahedral generatrix contours of winding coils and cross-sections of laminated and twisted ...
Ставинский, А.А.
core +3 more sources
SIDO coupled inductor‐based high voltage conversion ratio DC–DC converter with three operations
IET Power Electronics, 2021 Here, a single‐input, dual output (SIDO) coupled inductor‐based high voltage conversion ratio DC–DC converter is proposed. The proposed converter has the capability of operating as a SIDO converter in a way that the terminal of the input voltage source ...
Zahra Saadatizadeh +4 more
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Surface tracking in the inter-phase region of large transformers
, 2008 Transmission and distribution operators throughout the world manage significant populations of ageing large transformers which use mineral oil and paper as the dielectric insulation.
Mitchinson, Peter Mark
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Fleet Asset Management Opportunities Arising from Transient Monitoring of Power Transformers and Shunt Reactors [PDF]
, 2020 Power transformers and shunt reactors are strategic assets for every system operator and their downtime should be kept as low and controlled as possible. During their multi-decade service life, they are regularly exposed to transient overvoltages. These
Jurišić, Bruno +11 more
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Advanced Engineering Materials, EarlyView.Mass density governs the protective behavior of oxide layers on nuclear fuel cladding. Ptychographic X‐ray computed tomography measures zirconium oxide grown on Zircaloy‐4 under reactor and autoclave conditions, revealing nearly identical bulk densities of 5.1 ± 0.80 g cm−3.
Okan Yetik +9 more
wiley +1 more source
IET Generation, Transmission & Distribution, 2021 In this contribution, a new dissolved gas analysis (DGA) method combining key gases and ratio approaches for power transformer fault diagnostic is presented. It is based on studying subsets and uses the five main hydrocarbon gases including hydrogen (H2),
Arnaud Nanfak +4 more
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