Results 11 to 20 of about 172,189 (335)

Causal Scale of Rotors in a Cardiac System [PDF]

open access: yesFrontiers in Physics, 2018
Rotors of spiral waves are thought to be one of the potential mechanisms that maintain atrial fibrillation (AF). However, disappointing clinical outcomes of rotor mapping and ablation to eliminate AF raise a serious doubt on rotors as a macro-scale ...
Hiroshi Ashikaga   +7 more
doaj   +4 more sources

Neutral metallacyclic rotors [PDF]

open access: yesChemical Communications, 2009
A prototype of a neutral Re-based metallacyclic rotor, assembled in a one-step process, possesses a para-phenylene rotor that rotates in solution with respect to the stator.
Sathiyendiran, Malaichamy   +5 more
openaire   +3 more sources

Study on the fault ride through critical elements and coordinated control of DFIG's converters

open access: yesThe Journal of Engineering, 2019
The increasing of large-scale wind power integration capacity brings great challenges to the safe operation and management of power grid.
Bingjie Tang   +4 more
doaj   +1 more source

Quality Assurance Testing for Screening Defective Aluminum Die-cast Rotors of Squirrel Cage Induction Machines [PDF]

open access: yes, 2018
The recent trend in squirrel cage induction motor manufacturing is to replace fabricated copper rotors with aluminum die-cast rotors to reduce manufacturing cost to stay competitive in the global market. Porosity in aluminum die-cast squirrel cage rotors
Gyftakis, Konstantinos N.   +4 more
core   +1 more source

Simulation of wind turbine wake interaction using the vorticity transport model [PDF]

open access: yes, 2010
The aerodynamic interactions that can occur within a wind farm can result in the constituent turbines generating a lower power output than would be possible if each of the turbines were operated in isolation.
Ahlin   +15 more
core   +1 more source

Improved performances of the wind inlet of the Savonius rotor / Улучшения эксплуатационных свойств конфузора ротора Савониуса / Poboljšane performanse uvodnika za vetar Savoniusovog rotora

open access: yesVojnotehnički Glasnik, 2017
In this study we analyzed the design changes through increasing vertical angles of the top and bottom plates of the wind inlet of a Savonius rotor, in order to obtain better results and better system performances.
Dejan D. Dinčić, Milan Z. Despotović
doaj   +1 more source

Effect of PLL on transient performance of wind turbines generator under voltage phase jump

open access: yesThe Journal of Engineering, 2019
With the increasing proportion of wind power installed capacity, the influences of transient characteristics of wind turbines generator on safety and stability of power grid is becoming more and more important.
Chao Liu   +4 more
doaj   +1 more source

Optimal segmented rotor design for the embedded electrical machine for the more electric aircraft

open access: yesThe Journal of Engineering, 2019
This study presents the design and analysis of the segmented rotor design for an electrical machine embedded onto the more electric aircraft gas turbine engine shaft.
Jenn Yen Loh   +5 more
doaj   +1 more source

Fluid flow measurement in rotor ventilation ducts

open access: yesThe Journal of Engineering, 2019
Engineers are constantly developing different ways to cool electrical machines more efficiently. Ventilation ducts/channels are common in the stators of large electrical machines.
Christopher Micallef   +2 more
doaj   +1 more source

Longitudial fluctuations of rotors of disk knife refiners [PDF]

open access: yes, 2020
The subject of the study is the longitudinal fluctuations of the rotors of disk knife refiners. The dynamic and mathematical models of rotors of disk mills are developed.
Vikharev, S. N.
core  

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