Results 21 to 30 of about 3,833,099 (322)

Study of the Thermal Conductivity of Soft Magnetic Materials in Electric Traction Machines

open access: yesEnergies, 2021
The power density of traction drives can be increased with advanced cooling systems or reduced losses. In induction machines with housing and shaft cooling, the produced heat in the stator and rotor winding system needs to be extracted over the rotor and
Benedikt Groschup   +3 more
doaj   +1 more source

Monitoring of power factor for induction machines using estimation techniques [PDF]

open access: yes, 2015
Power factor is a significant element in power systems which is defined as the angle difference between voltages and currents that produces power fluctuation between sources and loads.
Abbod, M, Khodapanah, M, Zobaa, AF
core   +1 more source

Fusion of Vibration and Current Signatures for the Fault Diagnosis of Induction Machines

open access: yesShock and Vibration, 2019
Induction machines are widely used in the industry as one of the major actuators, such as water pumps, air compressors, and fans. It is necessary to monitor and diagnose these induction motors to prevent any sudden shut downs caused by premature failures.
Meng-Kun Liu, M. Tran, Peng-Yi Weng
semanticscholar   +1 more source

Performance Improvement of Grid-Connected Induction Motors through an Auxiliary Winding Set

open access: yesEnergies, 2021
A technique to improve the performance of grid-connected induction motors by exploiting an auxiliary winding set is proposed in this paper. This auxiliary winding features the same distribution of the main winding, although with a reduced number of turns
Luigi Danilo Tornello   +7 more
doaj   +1 more source

Large direct drive generators: the induction machine as an alternative to permanent magnet machines

open access: yesThe Journal of Engineering, 2019
Design of direct drive power take off in renewable energy generators tends to focus on force density, naturally leading to the use of relatively expensive permanent magnet machines.
Nick J. Baker, Liam A. Naugher
doaj   +1 more source

PERMANENT-MAGNET INDUCTION GENERATORS: AN OVERVIEW [PDF]

open access: yesJournal of Engineering Science and Technology, 2011
The advantage of using a permanent-magnet induction generator (PMIG) instead of a conventional induction generator is its ability to suppress inrush current during system linking when synchronous input is performed.
K. S. S. RAMAKRISHNAN   +2 more
doaj  

Parameter Estimation of Asymmetrical Six-Phase Induction Machines Using Modified Standard Tests

open access: yesIEEE transactions on industrial electronics (1982. Print), 2017
In multiphase machine drives, accuracy of the estimated machine parameters is crucial for effective performance prediction and/or control. While a great amount of work has been done on parameter estimation for three-phase machines, corresponding ...
H. S. Che   +3 more
semanticscholar   +1 more source

Emulating bearing faults : a novel approach [PDF]

open access: yes, 2016
The relation between evolving mechanical faults in rotating electrical machines and their reflection in the machines’ electrical parameters still requires a lot of research. This implies serious obstructions in the evolution of e.g.
Corne, Bram, Desmet, Jan, Knockaert, Jos
core   +2 more sources

A robust-adaptive linearizing control method for sensorless high precision control of induction motor

open access: yesMeasurement + Control, 2019
Even if there exists remarkable applications of induction machines in variable speed drives and also in speed sensorless control in the low–high speed region, open/closed loop estimators in the literature utilized on induction machine sensorless position
Caglar Uyulan
doaj   +1 more source

Electric generators and motors: An overview

open access: yesCES Transactions on Electrical Machines and Systems, 2017
Starting with Faraday's law of electromagnetic induction in 1831, electric (electromagnetic) machines have been developed ever since as “assembles” of electric and magnetic coupled circuits that convert mechanical to electrical energy (in generators) and
Ion Boldea
doaj   +1 more source

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