Results 31 to 40 of about 24,504 (297)

Current balance method of dual windings parallel coils based on distributed capacitor compensation in high‐power WPT systems

IET Electric Power Applications, 2022
Dual windings parallel (DWP) coils are often used in high‐power wireless charging applications to reduce current stress and internal resistance. Due to the inconsistent self‐inductance and strong coupling of the two windings, the advantages of the DWP ...
Zhi Bie, Chao Wang, Kai Song, Jiantao Zhang, Chunbo Zhu   +4 more
doaj   +1 more source

Pole-changing motor for lift installation [PDF]

E3S Web of Conferences, 2020
The Numerous lift installation require two speeds of rotation for the work. One of them is necessary for lifting, and another for exact stop of a cabin at a level of a floor. Now in these installations two speed motors with two separate windings are used.
Bobojanov Makhsud, Rismuxamedov Dauletbek, Tuychiev Furkat, Shamsutdinov Khusniddin, Magdiev Khayotullo   +4 more
doaj   +1 more source

Influence of strands transposition on current distribution and power losses in windings of AC machines

Tehnički Glasnik, 2018
This paper analyses how the type of winding affects the current distribution and power losses in armature winding. Using finite element method, four different types of winding used in large asynchronous motors are analyzed: form-wound concentric, with ...
Branko Tomičić, Ladislav Havaš, Dunja Srpak   +2 more
doaj   +1 more source

Brushless Excitation Principle and Experimental Verification of Hybrid Excitation Synchronous Generator Based on Harmonic Magnetic Field

IEEE Access, 2022
It is well known that the air-gap magnetic field of the permanent magnet synchronous generator (PMSG) is difficult to adjust. To overcome this challenge while maintaining the brushless feature of PMSGs, a hybrid excitation synchronous generator (HESG ...
Yonghong Xia, Huiyu Huang, Zhichao Zhu, Haoran Guo, Ying Chen   +4 more
doaj   +1 more source

Assessment of Electrical Machines’ State Based on Mathematical Modeling of Defect Formation in Windings

Приборы и методы измерений, 2022
The highest quality and timely diagnostics of windings’ state of various types of electrical machines including of asynchronous motors’ windings is an impoitant task. Among the existing diagnostic methods currently the most promising are those ones based
A. V. Isaev, U. V. Suchodolov, D. V. Balakhonov   +2 more
doaj   +1 more source

On the Feasibility of Localizing Transformer Winding Deformations Using Optical Sensing and Machine Learning

Photonics
Mechanical vibrations induced by electromagnetic forces during transformer operation can lead to winding deformation or failure, an issue responsible for over 12% of all transformer faults.
Najmeh Seifaddini, Meysam Beheshti Asl, Sekongo Bekibenan, Simplice Akre, Issouf Fofana, Mohand Ouhrouche, Abdellah Chehri   +6 more
doaj   +1 more source

Wind Winding Down [PDF]

Science, 2011
Climate Science Increasing concentrations of greenhouse gases in the atmosphere, emitted by human activities, have caused Earth's climate to warm. Climate warming has been linked to a host of other environmental changes, one of the most evident being an increase in the amount of water present ...
openaire   +1 more source

Wind-Turbine and Wind-Farm Flows: A Review [PDF]

Boundary-Layer Meteorology, 2019
AbstractWind energy, together with other renewable energy sources, are expected to grow substantially in the coming decades and play a key role in mitigating climate change and achieving energy sustainability. One of the main challenges in optimizing the design, operation, control, and grid integration of wind farms is the prediction of their ...
Fernando Porté-Agel, Majid Bastankhah, Sina Shamsoddin   +2 more
openaire   +5 more sources

Diagnostics of Winding Deformation in a Single-Phase Power Transformer with an Unloaded Tertiary Winding in Operational Mode

Acta Technologica Agriculturae, 2018
The presented paper is focused on the development of an algorithm and software implementation of this algorithm into diagnostics of winding deformation in a single-phase power transformer with an unloaded tertiary winding in operational mode.
Dorozhko Sergey, Krivunev Andrey
doaj   +1 more source

Identification of Power Transformer Winding Mechanical Fault Types Based on Online IFRA by Support Vector Machine

Energies, 2017
A transformer is the most valuable and expensive property for power utility, thus ensuring its reliable operation is a major task for both operators and researchers.
Zhongyong Zhao, Chao Tang, Qu Zhou, Lingna Xu, Yingang Gui, Chenguo Yao   +5 more
doaj   +1 more source