Results 61 to 70 of about 1,734,199 (244)

Optimal Robust Time-Domain Feature-Based Bearing Fault and Stator Fault Diagnosis

open access: yesIEEE Open Journal of the Industrial Electronics Society
In machine learning, the extraction of features is necessary for intelligent motor fault diagnosis. In industrial applications, it is necessary to identify the optimal number of features to differentiate various types of fault characteristics with less ...
G. Geetha, P. Geethanjali
doaj   +1 more source

Analytical and experimental investigation of stator endwall contouring in a small axial-flow turbine. 1: Stator performance [PDF]

open access: yes
Three stator configurations were studied to determine the effect of stator outer endwall contouring on stator performance. One configuration was a cylindrical stator design.
Haas, J. E.
core   +1 more source

FEM approach for diagnosis of induction machines' non-adjacent broken rotor bars by short-time Fourier transform spectrogram

open access: yesThe Journal of Engineering, 2019
Rotor electrical faults are an issue frequently encountered when applying condition monitoring and fault diagnosis on induction machines. The detection via the analysis of the stator current becomes challenging when the rotor cage suffers from multiple ...
Panagiotis A. Panagiotou   +5 more
doaj   +1 more source

Online-Identification of Electromagnetic Parameters of an Induction Motor

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2020
Incompliance of the settings of the system to control actual values of the parameters of a variable frequency induction electric drive may sometimes result in complete non-operability of a variable frequency electric drive as well as in the considerable ...
V. K. Tytiuk   +5 more
doaj   +1 more source

Loss model for off-design performance analysis of radial turbines with pivoting-vane, variable-area stators [PDF]

open access: yes
An off-design performance loss model is developed for variable-area (pivoted vane) radial turbines. The variation in stator loss with stator area is determined by a viscous loss model while the variation in rotor loss due to stator area variation (for no
Glassman, A. J., Meitner, P. L.
core   +1 more source

High-temperature electric stator [PDF]

open access: yes, 1970
Thermal vacuum tests are conducted on high-temperature stator without a rotor. Electrical characteristics remained satisfactory during tests, insulation improved slightly, and conductor resistance remained constant.
Kueser, P., Lindberg, R. A.
core   +1 more source

Cold-air performance of compressor-drive turbine of Department of Energy upgraded automobile gas turbine engine. 1: Volute-manifold and stator performance [PDF]

open access: yes
The aerodynamic performance of the inlet manifold and stator assembly of the compressor drive turbine was experimentally determined with cold air as the working fluid.
Haas, J. E., Roelke, R. J.
core   +1 more source

Damping seal for turbomachinery [PDF]

open access: yes, 1985
A damping seal between a high speed rotor member and stator member that separates pressurized fluid compartments is described. It is characterized by the rotor member having a smooth outer surface and the stator member having its bore surface roughened ...
Vonpragenau, G. L.
core   +1 more source

A superelement-based method for computing unsteady three-dimensional potential flows in hydraulic turbomachines [PDF]

open access: yes, 1999
A numerical method is presented for the computation of unsteady, three-dimensional potential flows in hydraulic pumps and turbines. The superelement method has been extended in order to eliminate slave degrees of freedom not only from the governing ...
Esch, B.P.M. van   +2 more
core   +3 more sources

Toroidal drive with half stator

open access: yesAdvances in Mechanical Engineering, 2015
The toroidal drive can transmit large torque. However, it is a hard work to produce small toroidal stator which limits the miniaturization of the toroidal drive. Here, a novel toroidal drive with half stator is proposed for which the small stator can be produced easily.
Linping Fu, Lizhong Xu
openaire   +3 more sources

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