Temat: squirrel cage - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The model of double-cage induction motor for the analysis of thermal fields in transient operations
Autorzy:: Mróz, J.
Powiązania:: https://bibliotekanauki.pl/articles/141544.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AC motors
heating
induction motors
squirrel cage motors
temperature rise
Opis:: Emergency motor switch-on happens occasionally while operating a doublesquirrel- cage motor at full supply voltage with the rotor blocked (e.g., in coal mills). After releasing the blockage, the by now heated motor is started up again. However, the mechanical stress caused by the increased temperature poses considerable hazards to the squirrel-cage winding. This paper presents a double-cage induction motor model for analysis of thermal fields in transient operation. The thermal field for the rotor of a doublesquirrel- cage motor of soldered or cast structure, operating in the conditions described, has been calculated in the present paper using a thermal network method. Measurement results have been presented for the double-squirrel-cage winding temperature for a soldered cage construction in the blocked rotor state.
Źródło:: Archives of Electrical Engineering; 2017, 66, 2; 397-408
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Squirrel cage induction motors with idle bars
Autorzy:: Bernatt, J.
Powiązania:: https://bibliotekanauki.pl/articles/141386.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: silnik indukcyjny
klatka wirnika
pręt bierny
induction motor
squirrel cage
idle bar
hard working conditions
Opis:: The paper describes high output induction motors driving large applications of heavy starting conditions. Heavy start is characterised by long accelerating time and occures in drives of hudge inertia torque, esspecially when performed at full load. The reliable operation of the motors depends on proper design and quality of rotor's cage. The aspects of thermal behaviour and electrodynamic forces have to be considered during the design of the motor for hard working conditions. In the paper the rotor with idle bars is investigated.
Źródło:: Archives of Electrical Engineering; 2010, 59, 1-2; 79-86
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Thermal analysis of Double Stator Switched Reluctance Machine (DSSRM) with and without a squirrel cage rotor
Autorzy:: Abbasian, M.
Jalali, H.
Powiązania:: https://bibliotekanauki.pl/articles/140844.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Computational Fluid Dynamics (CFD)
Finite Element Method (FEM)
squirrel cage
double stator
switched reluctance machine
thermal analysis
Opis:: Double Stator Switched Reluctance Machine (DSSRM) is a novel switched reluctance machine with limited information about its heat distribution and dissipation. This paper presents a two dimensional (2-D) thermal analysis of Double Stator Switched Reluctance Machine (DSSRM) to observe actual heat distribution in the parts of the machine, using Finite Element Method (FEM). Two topologies for the rotor of DSSRM are considered, Non-Squirrel Cage Double Stator Switched Reluctance Machine (NSCDSSRM) and Squirrel Cage Double Stator Switched Reluctance Machine (SC-DSSRM). The heat distribution of these two topologies is analyzed, using Computational Fluid Dynamics (CFD). Finally the results are presented and compared.
Źródło:: Archives of Electrical Engineering; 2017, 66, 1; 189-198
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of fault states in drive systems with multi-phase induction motors
Autorzy:: Listwan, Jacek Jan
Powiązania:: https://bibliotekanauki.pl/articles/141008.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Direct Field-Oriented Control method
Fault Tolerant Control
MRASCC estimator
multi-phase squirrel-cage induction moto sensorless drives
Voltage Source Inverter faults
Opis:: The paper presents the analysis of different fault states in drive systems with multiphase induction motors. The mathematical models of a five-phase and six-phase induction motor and the MRASCC estimator have been presented and the description of the Space Vector Modulation has been shown. The Direct Field-Oriented Control (DFOC) system is analyzed. Results of the simulation and experimental studies of the Direct Field-Oriented Control systems in the fault conditions are presented. The author’s original contribution includes analysis and studies of the DFOC control method of a five-phase induction motor resistant to the motor speed sensor fault with the use of the MRASCC estimator.
Źródło:: Archives of Electrical Engineering; 2019, 68, 4; 817-830
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The effect of closed loop control on diagnostic indices in different faults of squirrel cage induction motor
Autorzy:: Bouabid, Nourelhouda
Moussa, Mohamed-Amine
Maouche, Yassine
Khezzar, Abdelmalek
Powiązania:: https://bibliotekanauki.pl/articles/1955204.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: closed loop control
discrete Fourier transformation
fault diagnostic
indirect filed control
rotor mechanical faults
squirrel cage induction motor
sterowanie w pętli zamkniętej
dyskretna transformacja Fouriera
diagnostyka błędów
sterowanie pośrednie złożone
usterki mechaniczne wirnika
silnik indukcyjny klatkowy
Opis:: The aim of this work is to study the influence of closed loop control on diagnostic indices of both broken bar and mixed air-gap eccentricity fault indices of the squirrel cage induction motor drive. The present work is focused on the direct stator current isd signal analysis, which is independent of torque load when the induction motor is controlled by an indirect control field. The fault signatures are on the line extracted from the direct stator current signal using the discrete Fourier transformation (DFT). The formula of the measured direct stator current at both conditions is determined by the transfer function of the current loop. The obtained results show that the current loop corresponds to a low pass filter and can reduce the magnitude of diagnostic indicators which lead to wrong evaluation of the fault. Simulation and experiments were carried out in order to confirm the theoretical analysis.
Źródło:: Archives of Electrical Engineering; 2021, 70, 4; 943-958
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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