Results 21 to 30 of about 131,284 (306)
Flow Structures Inside a Rotor‐Stator Cavity [PDF]
International Journal of Rotating Machinery, 2000 This paper describes an experimental investigation initiated to determine the threedimensional flow field inside the rim seal cavity of a double‐shrouded rotor‐stator system. Thereby, the effects caused by perturbances in the rotor wall were additionally examined.
Geis, Torsten +3 more
openaire +2 more sources
Detection and Diagnosis of Motor Stator Faults using Electric Signals from Variable Speed Drives [PDF]
, 2015 Motor current signature analysis has been investigated widely for diagnosing faults of induction motors. However, most of these studies are based on open loop drives.
Shaeboub, Abdulkarim +9 more
core +1 more source
Thermal Modeling of a Mini Rotor-Stator System [PDF]
Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C, 2009 In this study the temperature increase and heat dissipation in the air gap of a cylindrical mini rotor stator system has been analyzed. A simple thermal model based on lumped parameter thermal networks has been developed. With this model the temperature dependent air properties for the fluid-rotor interaction models have been calculated.
Dikmen, E. +4 more
openaire +2 more sources
Matrix structure of unified mathematical model of electric AC machines at control [PDF]
E3S Web of Conferences, 2020 The matrix structure of the equations of a generalized electric alternating current machine is proposed, which, based on the Parke equations, is written in the coordinate axes of the machines rotating with the rotor speed.
Mustafayev Rauf +2 more
doaj +1 more source
The Journal of Engineering, 2019 In this study, the influence of the stator and rotor geometric parameters on the rotor bar current waveform and performance characteristics of a squirrel-cage induction machine (IM), based on a slot/pole number combination (48-stator slot/8-pole/52-rotor
Tayfun Gundogdu +4 more
doaj +1 more source
On the transient behaviour of a laminar rotor–stator cavity [PDF]
Journal of Fluid Mechanics, 2018 The unsteady laminar flow between two large rotating disks when one of them is impulsively started is described using the von Kármán similarity analysis to reduce the solution of the Navier–Stokes equations to a set of ordinary differential equations. It is found that the transient phenomenon consists of three distinct phases.
Corral García, Roque +1 more
openaire +3 more sources
A Comparative Study of Time-Frequency Representations for Fault Detection in Wind Turbine [PDF]
, 2011 To reduce the cost of wind energy, minimization and prediction of maintenance operations in wind turbine is of key importance. In variable speed turbine generator, advanced signal processing tools are required to detect and diagnose the generator faults ...
CHARPENTIER, Jean-Frederic +10 more
core +1 more source
Modeling and Evaluation of Stator and Rotor Faults for Induction Motors
Energies, 2019 The modeling of stator and rotor faults is the basis of the development of online monitoring techniques. To obtain reliable stator and rotor fault models, this paper focuses on dynamic modeling of the stator and rotor faults in real-time, which adopts a ...
Jing Tang +5 more
doaj +1 more source
Energies, 2020 This paper presents a new approach method for online rotor and stator resistance estimation of induction motors using artificial neural networks for the sensorless drive.
Tuan Pham Van +5 more
doaj +1 more source
Assessment of 3D modeling for rotor–stator contact simulations [PDF]
Journal of Sound and Vibration, 2015 Most often the dynamic analysis of rotor-to-stator rub is performed using 1D models. This leads to a small computational cost, but the reliability of the results is difficult to assess. This research work compares and analyzes the results of 1D and 3D rotor-stator contact problems, for different contact conditions more and less severe.
Mikhael Tannous +3 more
openaire +4 more sources