Results 31 to 40 of about 10,860,701 (242)

Effect of Damper Winding and Stator Slot Skewing Structure on No-Load Voltage Waveform Distortion and Damper Bar Heat in Large Tubular Hydro Generator

IEEE Access, 2018
We study the influence of the damper bar pitch, the stator slot skewing degree, and the damper bar number per pole on the no-load voltage waveform harmonic distortion factor (HDF) and the damper winding heat of a tubular hydro generator.
Zhen-Nan Fan, Li Han, Yong Liao, Li-Dan Xie, Kun Wen, Jun Wang, Xiu-Cheng Dong, Bing Yao   +7 more
doaj   +1 more source

An Index Refined Winding Pair Polynomial for Planar Knotoids

Axioms
Planar knotoids contain endpoint position information because the forbidden endpoint moves prevent the leg and the head from passing across arcs. Existing polynomial invariants based on Gauss diagrams and winding data record important parts of this ...
Liang Liang, Liyuan Ma
doaj   +1 more source

The Optimization Design of Short-Term High-Overload Permanent Magnet Motors Considering the Nonlinear Saturation

Energies, 2018
Electric actuators with fast dynamic response and high torque density are widely used in aerospace and industrial applications. In this paper, the design and optimization of a short-term high-overload permanent magnet synchronous motor (STHO-PMSM) is ...
Yu-Xi Liu, Li-Yi Li, Ji-Wei Cao, Qin-He Gao, Zhi-Yin Sun, Jiang-Peng Zhang   +5 more
doaj   +1 more source

General modeling of the windings for multi-phase ac machines [PDF]

, 2010
This paper, which deals with the winding modeling of ac multi-phase machines with a regular distribution of the stator slots, details an original matrix modeling of the stator winding.
CHARPENTIER, Jean-Frederic, SCUILLER, Franck, E. Semail, J.-F. Charpentier, SEMAIL, Eric, Semail, E., F. Scuiller, Scuiller, F., Charpentier, J.-F.   +8 more
core   +1 more source

Specific Features of Fluoroplastic Band Bending with Due Account of Various Modularity of Material

Наука и техника, 2019
The paper considers a technological process for production of sealing rings by winding a band work-piece on a cylindrical caliber mandrel with subsequent endurance under load and further cutting of a spiral in rings and also studies the possibility to ...
G. A. Vershina, L. E. Reut
doaj   +1 more source

Fractional Slot Concentrated Windings: A New Method to Manage the Mutual Inductance between Phases in Three-Phase Electrical Machines and Multi-Star Electrical Machines

Machines, 2015
Mutual inductance is a phenomenon caused by the circulation of the magnetic flux in the core of an electrical machine. It is the result of the effect of the current flowing in one phase on the other phases.
Olivier Barre, Bellemain Napame
doaj   +1 more source

Inter-Turn Short Circuits in Stator Winding of Permanent Magnet Synchronous Generator Dedicated for Small Hydroelectric Power Plants

Energies
This article presents the simulation results of inter-turn short circuits in the stator winding of a permanent magnet synchronous generator (PMSG) dedicated for small hydroelectric power plants.
Adam Gozdowiak, Maciej Antal
doaj   +1 more source

Accurate estimation of series capacitance using the high-frequency lumped model of transformer winding from FRI data measurements: An indirect measurement procedure

e-Prime: Advances in Electrical Engineering, Electronics and Energy
Measuring the series capacitance of a transformer winding is a challenging task because it cannot be directly measured with standard devices. This paper presents an indirect method to determine this key parameter, relying on only two measurements: the ...
Billel Allouane, Samir Moulahoum, Moustafa Sahnoune Chaouche   +2 more
doaj   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye, Chimezie Okwuonu, Evelyn Idam, Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Zinnah Aloziem, Blossom Amamchukwu, Patience Elimia, Mkpoikanabasi Obot‐Obot, Henry Mbakwe, Praises Maduagwuna, Olatunji Akinrodoye, Chiamaka Anyanwu, Benjamin Anyanwu, Adedamola Akinsiku, Oluwatoyin A. Akinsiku, Muzamil O. Hassan, Fatiu A. Arogundade, Olalekan E. Ojo, Homayemem Weli, Jesupelumi Adenihun, Aderemi Adelaja, Ebun Bamgboye, Olalekan Olatise, Ade E. Faponle, Ayoola Odeyemi, Michael Muoka, Stephen Asaolu, Qudrat Busari, Blessing Dawudu, Michael Naiyeju, Rasheed A. Balogun   +33 more
wiley   +1 more source

Methanol Marker for the Detection of Insulating Paper Degradation in Transformer Insulating Oil

Energies, 2019
This manuscript presents a comprehensive literature review with the aim to provide readers a reference document with up-to-date information on the field of methanol use as a chemical marker.
Jocelyn Jalbert, Esperanza M. Rodriguez-Celis, Oscar H. Arroyo-Fernández, Steve Duchesne, Brigitte Morin   +4 more
doaj   +1 more source