Thermal equivalent network method for calculating stator temperature of a shielding induction motor

2020 ◽  
Vol 147 ◽  
pp. 106149 ◽  
Author(s):  
Dongmei Wang ◽  
Yanping Liang ◽  
Cangxue Li ◽  
Peipei Yang ◽  
Chunlei Zhou ◽  
...  
Keyword(s):  
Induction Motor ◽  
Equivalent Network ◽  
Network Method ◽  
Equivalent Network Method

In-Plane Field Propagation in EAP Transducers Based on the Equivalent Network Method

2012 ◽  
Author(s):  
Christian Graf ◽  
Jürgen Maas
Keyword(s):  
Smart Materials ◽  
Voltage Drop ◽  
Mechanical Strain ◽  
Electrical Energy ◽  
Equivalent Network ◽  
New Class ◽  
Plane Field ◽  
Proposed Model ◽  
Network Method ◽  
Equivalent Network Method

Dielectric Electroactive Polymers belong to a new class of smart materials, whose functional principle is based on electrostatic forces. They can either be used as actuators to provide considerable stretch ratios or as generators to convert mechanical strain energy into electrical energy by use of an initial amount of energy. Since the polymer material and also the covering compliant electrodes show non-ideal electrical properties, like finite resistivity and conductivity respectively, design rules have to be derived, in order to optimize the devices. The electrode conductivity in connection with the polymer resistivity causes a voltage drop along the electrode surface, resulting in a reduced actuation strain or energy conversion. To minimize its parasitic effects, the influence of this effect is studied by the in-plane field propagation based on a model obtained with the equivalent network method. It is shown that the proposed model provides accurate results, which can be used to study the effect of contacting electrodes, especially in case of point contacts.

scholarly journals Estimation of Stator Winding Temperature of a Three-Phase Induction Motor

2019 ◽  
pp. 9-17
Keyword(s):  
Induction Motor ◽  
Stator Winding ◽  
Squirrel Cage ◽  
Software Methodology ◽  
Software Packages ◽  
Three Phase ◽  
Network Method ◽  
Thermal Network Method ◽  
Motor Operation ◽  
Good Agreement

This paper adopted a thermal network method (TNM) based on Motor-CAD with MATLAB/Simulink software, and finite element method (FEM) based on Motor- CAD with Flux2D software, to estimate the stator winding temperature of a totally enclosed fan-cooled (TEFC), squirrel cage, three-phase induction motor. The three software packages were adopted successfully with a good agreement among their results resulting in preferring using Motor-CAD in obtaining results, and using Flux2D with MATLAB to validate these results. The success of triple-software methodology will give the induction motor designer a well-validated tool in attaining a safe motor operation without exceeding the maximum allowable stator winding temperature rise, and without using an experimental test based on an expensive manufacturing motor.

Thermal analysis of a three-phase induction motor based on motor-CAD, flux2D, and matlab

2019 ◽  
Vol 15 (1) ◽  
pp. 48
Author(s):  
Afrah Thamer Abdullah ◽  
Amer Mejbel Ali
Keyword(s):  
Thermal Analysis ◽  
Induction Motor ◽  
Heat Sources ◽  
Squirrel Cage ◽  
Software Methodology ◽  
Precise Knowledge ◽  
Three Phase ◽  
Network Method ◽  
Thermal Network Method ◽  
Good Agreement

This paper adopted a thermal network method (TNM) based on  Motor-CAD software, and Matlab/SIMULINK, with finite element method (FEM) based on Flux2D software to perform a thermal analysis of a totally enclosed fan-cooled (TEFC), squirrel cage, three-phase induction motor. The thermal analysis is achieved based on a precise knowledge of the test motor geometry, materials, and heat sources (losses). The estimation of heat distribution inside the test motor by this three software is done successfully with a good agreement between its results. The proposed triple-software methodology for this work can be adopted from the motor designer instead of using an experimental test based on a real motor.

scholarly journals The model of double-cage induction motor for the analysis of thermal fields in transient operations

2017 ◽  
Vol 66 (2) ◽  
pp. 397-408 ◽  
Author(s):  
Jan Mróz
Keyword(s):  
Induction Motor ◽  
Supply Voltage ◽  
Thermal Fields ◽  
Squirrel Cage ◽  
Measurement Results ◽  
Network Method ◽  
Thermal Network Method ◽  
Cage Induction Motor ◽  
Transient Operations ◽  
Motor Model

AbstractEmergency 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.

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