Results 41 to 50 of about 1,718,853 (194)

Experimental and finite element studies of a 250 kW brushless doubly fed induction generator

open access: yesThe Journal of Engineering, 2019
This study studies, using experimentally verified finite element (FE) analysis, various performance measures of the brushless doubly fed induction generator (BDFIG) when magnetic wedges are used for closing stator open slots.
Salman Abdi, Ehsan Abdi, Richard McMahon
doaj   +1 more source

Morphology and gene expression profiling provide complementary information for mapping cell state [PDF]

open access: green, 2022
Gregory P. Way   +19 more
openalex   +1 more source

Performance of superconducting generators with different topologies under fault conditions

open access: yesThe Journal of Engineering, 2019
This paper compares the short-circuit performance of superconducting (SC) generators with three different topologies, i.e. iron-cored stator and rotor, iron-cored stator and air-cored rotor, and air-cored stator and rotor.
Yang Guan   +6 more
doaj   +1 more source

Flagellar Stators Activate a Diguanylate Cyclase To Inhibit Flagellar Stators [PDF]

open access: yesJournal of Bacteriology, 2019
The bacterial secondary metabolite cyclic di-GMP is a widespread, cytoplasmic signal that promotes a physiological transition in which motility is inhibited and biofilm formation is activated. A paper published in this issue (A. E. Baker, S. S. Webster, A. Diepold, S. L. Kuchma, E.
openaire   +2 more sources

Comparative investigation of stator-mounted permanent magnet machines under fault conditions

open access: yesThe Journal of Engineering, 2019
Here, machines having permanent magnets (PM) mounted in the stator are compared during fault operations such as armature winding short circuits. The magnet potential irreversible demagnetisation is also investigated due to the fact that the PMs are ...
Petrica Taras   +5 more
doaj   +1 more source

Modifying the control design of DFIG-based wind turbines in order to inhibit power system oscillations

open access: yesThe Journal of Engineering, 2019
Providing additional damping for system electromechanical oscillations through doubly fed induction generator (DFIG)-based wind turbines is investigated in this study.
Mohammad Jafarian, Mohammad-Naser Asefi
doaj   +1 more source

Effect of tooth tips on the electromagnetic performance of PM fractional-slot modular machines using grain-oriented electrical steel

open access: yesThe Journal of Engineering, 2019
The effect of tooth tips on the performance variations due to using grain-oriented electrical steel (GOES) stator laminations in permanent magnet fractional-slot modular machines is studied in this work.
Jaime Maraví-Nieto   +3 more
doaj   +1 more source

Comparative analysis of salient pole and flux barrier rotor for synchronous reluctance machines including flux weakening range

open access: yesThe Journal of Engineering, 2019
Here, synchronous reluctance machine types related to electrical traction applications are investigated including flux weakening range. A flux barrier (FB) machine with a carbon fibre-reinforced plastic bandage and a salient pole machine are designed by ...
Matthias Hofer   +3 more
doaj   +1 more source

New method for experimental modal analysis of hydrogenerator's stator core using the excitation from the Poles

open access: yesThe Journal of Engineering, 2019
The study of stator core vibrations generated by electromagnetic forces in electrical machines is of great practical and theoretical interest. An important part of the problem is the correct determination of mode shapes and eigen frequencies of the ...
Allan de Barros   +9 more
doaj   +1 more source

Linear consequent pole Halbach array flux reversal machine

open access: yesThe Journal of Engineering, 2019
This paper presents a linear variable reluctance permanent magnet (LVRPM) machine where the armature winding and inset Halbach array permanent magnets (PMs) are mounted on E-core stators.
Mohammad Abdul Hakim Raihan   +3 more
doaj   +1 more source

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