Results 21 to 30 of about 1,718,853 (194)

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

Identification of slot discharges in rotating machine insulation system using variable frequency PD measurement

open access: yesHigh Voltage, 2018
Slot discharge studies are very important from the insulation diagnosis perspective. Further in practice, testing of rotating machines with power frequency requires sources which are quite bulky and costly.
Ramesh P. Nair   +3 more
doaj   +1 more source

Particle swarm optimisation technique to improve energy efficiency of doubly-fed induction generators for wind turbines

open access: yesThe Journal of Engineering, 2019
Wind energy conversion systems (WECSs) require a suitable control to maximise the power generated by wind turbines independently on the wind conditions.
Cherngchai Sompracha   +2 more
doaj   +1 more source

Design route towards a PM machine for rotorcraft environments

open access: yesThe Journal of Engineering, 2019
This paper discusses the design route followed in the development of a permanent magnet (PM) machine for electrical power generation on board a rotorcraft (helicopter).
Dominic North   +4 more
doaj   +1 more source

Finite element analysis of a modular brushless wound rotor synchronous machine

open access: yesThe Journal of Engineering, 2019
This study presents a comparative study of different modular brushless wound rotor synchronous machines (MB-WRSM) using non-overlapping fractional slot double-layer concentrated windings.
Huong Thao Le Luong   +5 more
doaj   +1 more source

Research and Solutions to Minimize Frontal Area Overheating of Hydro Generator Stator with Vertical Axis

open access: yesEnergies, 2021
About ten hydroelectric power plants realized from 1970 to 1990 in Romania are confronted with stator overheating. The developed mathematical model analyzes the voltage stability based on modal analysis of the Jacobian matrix, identifying the hazardous ...
Victorita Radulescu
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

Utilisation of grain-oriented electrical steel in permanent magnet fractional-slot modular machines

open access: yesThe Journal of Engineering, 2019
The performance improvement of using grain-oriented electrical steels (GOES) in the stator of PM fractional-slot modular machines is analysed in this study.
Jaime Maraví-Nieto   +3 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

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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