Results 21 to 30 of about 24,504 (297)

Feasibility study of embedded FBG thermal sensing use for monitoring electrical fault-induced thermal excitation in random wound coils

open access: yesThe Journal of Engineering, 2019
This paper reports an experimental feasibility study of the potential for using Fibre Bragg Grating (FBG) thermal sensing technology for electrical fault detection in random wound coils.
Anees Mohammed, Siniša Djurović
doaj   +1 more source

Diagnosing Transformer Winding Deformation Faults Based on the Analysis of Binary Image Obtained From FRA Signature

open access: yesIEEE Access, 2019
Frequency response analysis (FRA) has been widely accepted as a diagnostic tool for power transformer winding deformation faults. Typically, both amplitude-frequency and phase-frequency signatures are obtained by an FRA analyzer.
Zhongyong Zhao   +5 more
doaj   +1 more source

Reduction in Eddy Current Loss of Special Rectangular Windings in High-Torque IPMSM Used for Wind Generator

open access: yesIEEE Access, 2023
A special rectangular winding structure, which has different cross-sectional shape but the same cross-sectional area for each turn, has been adopted in a high-torque IPMSM used for a wind generator to improve slot factor and heat dissipation.
Xianji Tao   +3 more
doaj   +1 more source

Improved Analytical Algorithm for Magnetic Field of End Windings in 300Mvar Synchronous Condenser

open access: yesIEEE Access, 2021
The magnetic field of end windings affects the leakage reactance of end windings and the eddy current losses of end structures in the large electrical machine. With the rising of single-machine capacity, such effect becomes more obvious.
Erhang Zhu   +4 more
doaj   +1 more source

Wind power variation by wind veer characteristics with two wind farms

open access: yesScientific Reports, 2023
AbstractTo clarify the wind veer characteristics with height and their effect on the wind turbine power outputs, an investigation was carried out at the wind farms with complex and simple terrains. A 2 MW and a 1.5 MW wind turbine were tested, each having an 80 m tall met mast and a ground lidar to capture wind veering.
Undarmaa Tumenbayar, Kyungnam Ko
openaire   +3 more sources

Design and analysis of a novel rotor-segmented axial-field switched reluctance machine

open access: yesCES Transactions on Electrical Machines and Systems, 2017
As excitation strategy is influenced by the parity of phase number, and serious end effect is caused by full pitch windings adopted by the conventional rotor-segmented switched reluctance machine (RS-SRM), a novel rotor-segmented axial-field switched ...
Wei Sun, Qiang Li, Kai Liu, Lei Li
doaj   +1 more source

Improved Method to Obtain the Online Impulse Frequency Response Signature of a Power Transformer by Multi Scale Complex CWT

open access: yesIEEE Access, 2018
Online impulse frequency response analysis (IFRA) has proven to be a promising method to detect and diagnose the transformer winding mechanical faults when the transformer is in service.
Zhongyong Zhao   +6 more
doaj   +1 more source

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