Results 61 to 70 of about 4,033 (193)
Space Weather, Volume 23, Issue 4, April 2025.Abstract Geomagnetically induced current (GIC) measurements made at two 3 phase, 3 limb transformers, operating in the Halfway Bush substation in Dunedin, New Zealand have been analyzed during the May 2024 Gannon Storm. GIC measurements were combined with very low frequency radio wave AC harmonic measurements made nearby, and reactive power ...
M. A. Clilverd +11 more
wiley +1 more source
Hybrid and modular multilevel converter designs for isolated HVDC–DC converters [PDF]
, 2018 Efficient medium and high-voltage dc-dc conversion is critical for future dc grids. This paper proposes a hybrid multilevel dc-ac converter structure that is used as the kernel of dc-dc conversion systems.
Adam, G.P. +4 more
core +1 more source
Wind Energy, Volume 28, Issue 2, February 2025.ABSTRACT Reactive power compensation is now a challenging issue in maintaining adequate power quality and improving the performance of the transmission system. Many researchers have focused on the behavior of voltage in the unbalanced state, and the majority of the studies have been done with STATCOM. In this study, the increasing power demand in power
H. Feza Carlak, Ergin Kayar
wiley +1 more source
No Load Simulation and Downscaled Experiment of UHV Single-Phase Autotransformer Under DC Bias
IEEE Access, 2020 The time-domain field-circuit coupled finite element method (FEM) is widely used to analyze the DC effects on transformers. However, the long transient process of calculation will encounter difficulties due to the tremendous requirement of computer ...
Bing Li +3 more
doaj +1 more source
A Modular Multi‐Port Hybrid Solid‐State Transformer for Large‐Scale Renewable Power Applications
IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.This article proposes a four‐port solid‐state transformer (FPSST) to enhance large‐scale energy generation from renewable sources. The FPSST incorporates a modular multilevel converter to collect both medium‐voltage ac and medium voltage dc from wind and solar systems.
Md. Sanwar Hossain +3 more
wiley +1 more source
High-Freqeuncy Analysis of Three-Winding Autotransformers 400/121/34 kV
Advances in Electrical and Electronic Engineering, 2008 This article deals with a description of methods of an experimental analysis concerning the actual condition of windings and magnetic circuit of the autotransformer, which is required in power transmission companies all over the world.
Miroslav Gutten +3 more
doaj
18-pulse rectifier with electronic phase shifting and matching autotransformer [PDF]
, 2018 Для снижения гармонических искажений входного тока, применяются многопульсныевыпрямители, требующие наличия фазосдвигающих трансформаторов либо автотрансформаторов.
Бутова, Ольга Анатольевна +3 more
core +1 more source
IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.This study examines the impact of reclosing on the radial dynamic stability of transformer windings, revealing that the reclosing short‐circuit current and associated electromagnetic forces significantly increase compared to initial short‐circuit conditions.
Yuefeng Hao +3 more
wiley +1 more source
Energies, 2018 With the evolution of the More Electric Aircraft (MEA) concept, high pulse converters have gained the attention of researchers due to their higher power quality.
Shahbaz Khan +5 more
doaj +1 more source
Functional modelling of symmetrical multi-pulse auto- transformer rectifier units for aerospace applications [PDF]
, 2015 This paper aims to develop a functional model of symmetrical multi-pulse Auto-Transformer Rectifier Units (ATRUs) for More-Electric Aircraft (MEA) applications. The ATRU is seen as the most reliable way readily to be applied in the MEA.
Asher, Greg, Bozhko, Serhiy, Yang, Tao
core +2 more sources