Results 1 to 10 of about 175,294 (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

Design and analysis of dual‐stator hybrid excited linear flux switching machine for long‐stroke applications

open access: yesIET Electric Power Applications, 2021
In this work, a novel dual‐stator hybrid excited linear flux switching machine (DSHELFSM) is proposed. The proposed machine is suitable for long‐stroke applications as all the excitation sources are mounted on a short mover and the stator is completely ...
Basharat Ullah   +4 more
doaj   +1 more source

Performance of multi-stage axial-flux machines with MMEs

open access: yesThe Journal of Engineering, 2019
This study covers the investigation into the reduction of rare-earth magnets in a permanent magnet (PM) machine via the use of multiple rotors to enable a PM generator to be comprised of mixed magnetic elements, hereafter referred to as MME, by ...
Anthony James Spargo
doaj   +1 more source

Water Tank Experiments on Stratified Flow over Double Mountain-Shaped Obstacles at High-Reynolds Number

open access: yesAtmosphere, 2017
In this article, we present an overview of the HyIV-CNRS-SecORo (Hydralab IV-CNRS-Secondary Orography and Rotors Experiments) laboratory experiments carried out in the CNRM (Centre National de Recherches Météorologiques) large stratified water flume. The
Ivana Stiperski   +10 more
doaj   +1 more source

Design methodology for a special single winding based bearingless switched reluctance motor

open access: yesThe Journal of Engineering, 2017
Bearingless switched reluctance motors (BSRMs) have both magnetic bearing as well as conventional motor characteristics which make them suitable for diverse industrial applications.
Madhurjya Dev Choudhury   +5 more
doaj   +1 more source

Influence of static and dynamic rotor/stator misalignments in axial flux magnetically geared machines

open access: yesThe Journal of Engineering, 2019
Here, static and dynamic (rotating) misalignments between the low-speed rotor (LSR) and the stator of axial flux magnetically geared machines are studied with the aid of 3-D finite element analysis (FEA).
Mohammed F. Hamad Khatab   +3 more
doaj   +1 more source

Novel partitioned stator hybrid excited machines with magnets on slot openings

open access: yesThe Journal of Engineering, 2019
In this study, a novel partitioned stator hybrid excited machine is proposed, in which the excitation sources including both permanent magnets (PMs) and field windings are allocated on the secondary stator that is separated from the original stator ...
Hao Hua, Z.Q. Zhu
doaj   +1 more source

Multilayer air gap winding designs for electric machines: theory, design, and characterisation

open access: yesThe Journal of Engineering, 2019
Here, the authors present a magnetic circuit design with a multilayer air gap winding. This design provides a new degree of freedom in the design process.
Norman Borchardt   +4 more
doaj   +1 more source

Space modulation profile modelling for steer-by-wire SMPMSM

open access: yesThe Journal of Engineering, 2019
This paper presents a sensorless estimation algorithm for steer-by-wire applications based on the injection of a high-frequency rotating voltage. Enhancement to the basic sensorless algorithm through SMP look-up tables is proposed.
Kris Scicluna   +2 more
doaj   +1 more source

Integral sliding mode control for back-to-back converter of DFIG wind turbine system

open access: yesThe Journal of Engineering, 2020
In this study, an integral sliding mode control approach for controlling the power electronics converters of a doubly-fed induction generator (DFIG) wind turbine system is presented.
Adel Merabet   +5 more
doaj   +1 more source

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