Results 21 to 30 of about 198,967 (348)

Thermal Behavior of Asynchron Motor under Different Operation Conditions [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2020
Electrical motors today are present in many industrial processes, cover a wide range of mechanical equipment and play a major role in critical industrial applications.
FANTIDIS G. Jacob   +1 more
doaj  

Turn-to-turn fault protection technique for synchronous machines without additional voltage transformers [PDF]

open access: yes, 2017
This paper presents a novel protection technique for the detection of inter-turn faults in synchronous machines. It is based on the calculation of voltage in the stator windings from the usual phases and neutral voltage, typically available in ...
Gyftakis, Konstantinos N.   +2 more
core   +1 more source

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

Wind Waves [PDF]

open access: yes, 2018
Wind-generated waves dominate sea surface motions for periods shorter than 300 seconds. Waves are of interest for many applications ranging from navigation safety to ocean and coastal engineering. Waves also define air-sea fluxes and have important interactions with surface currents, upper ocean turbulence, and sea ice.
Ardhuin, Fabrice, Orfila, Alejandro
openaire   +2 more sources

Estimation of Oil Spray Cooling Heat Transfer Coefficients on Hairpin Windings With Reduced-Parameter Models

open access: yesIEEE Transactions on Transportation Electrification, 2020
Hairpin windings and spray cooling are becoming an increasingly popular combination in the field of high-performance electrical machine design. Machines adopting hairpin windings can achieve higher torque and power densities while enabling them to be ...
Chuan Liu   +8 more
semanticscholar   +1 more source

Dynamical behavior and Jacobi stability analysis of wound strings [PDF]

open access: yes, 2016
We numerically solve the equations of motion (EOM) for two models of circular cosmic string loops with windings in a simply connected internal space.
Harko, Tiberiu, Lake, Matthew J.
core   +2 more sources

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

Cooling of Windings in Electric Machines via 3-D Printed Heat Exchanger

open access: yesIEEE transactions on industry applications, 2020
This article presents a novel use of three-dimensional printed direct winding heat exchangers (3-D-DWHX) to improve the thermal management of the stator in high power density electric machines.
W. Sixel   +3 more
semanticscholar   +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

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