scholarly journals Numerical Investigation on Faults Diagnosis for AC Induction Machine by Magnetic Flux Distribution

2020 ◽  
Author(s):  
Linfeng Li ◽  
Yating Yu ◽  
Qin Hong ◽  
Zhenwei Wang
Keyword(s):  
Magnetic Flux ◽  
Flux Distribution ◽  
Induction Machine ◽  
Induction Machines ◽  
Health Condition ◽  
Normal Operation ◽  
Servo Drive ◽  
Squirrel Cage ◽  
Faults Diagnosis ◽  
Ac Induction Motor

AC induction machines are widely used in electric servo drive, information processing, transportation and other fields. However, the unexpected faults cause the serious threat for the normal operation and operator’s safety. Therefore, timely faults diagnosis is an effective way to ensure the AC induction machines to work in health condition. In AC induction machines, magnetic field is the basis of energy conversion of motor, and the faults have the directly influence on the electromagnetic field distribution. In this paper, 2D numerical model of the AC squirrel-cage asynchronous induction machine is built by using COMSOL Multiphysics according to finite element method; Then, the magnetic flux distribution of AC induction motor with three different faults which commonly occurs in engineering are simulated. Base on the numerical simulation, the influence of the different faults on the magnetic distribution is discussed in detail. The investigation is beneficial to find a nondestructive fault diagnosis approach to the induction machine.

scholarly journals High-power density induction machines with increased windings temperature

Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 642-651
Author(s):  
Aicha Laidoudi ◽  
Stéphane Duchesne ◽  
Fabrice Morganti ◽  
Gabriel Velu
Keyword(s):  
Large Scale ◽  
Operating Temperature ◽  
Induction Machine ◽  
Weight Ratio ◽  
Induction Machines ◽  
Essential Information ◽  
Critical Areas ◽  
Squirrel Cage ◽  
Influence Of Temperature On ◽  
The Sacrifice

AbstractThe increase of the operating temperature of electrical machines is a major challenge in the context of the large-scale use of electricity in many industrial or individual applications such as mobility. Indeed, working at higher temperatures makes it possible to place electrical actuators in critical areas – such as aircraft engines, for example – and/or to significantly improve the power-to-weight ratio of the machine. For several applications (deep pumping, ventilation, etc.), the use of the induction machine is still preferred due to cost, simplicity and robustness essentially. The objective of this study is to estimate the possibilities of making a high-temperature squirrel cage induction machine. A significant increase in the operating temperature of a machine would indirectly allow us to envisage an increase in the current density in the active conductors and thus a significant improvement in the power-to-weight ratio. However, this is at the sacrifice of efficiency. The aim of this study is to evaluate this decrease in efficiency correlated with the increase in the temperature to find the best compromise according to the relevant applications. An analytic sizing model has been proposed for the prediction of losses, which will be coupled with a thermal model to predict the temperature in different parts of the machine. This study presents essential information on the influence of temperature on the parameters important for the performance of an induction machine.

scholarly journals Speed Control with Indirect Field Orientation for Low Power Three-Phase Induction Machine with Squirrel Cage Rotor

Machines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 320
Author(s):  
Robert R. Gomes ◽  
Luiz F. Pugliese ◽  
Waner W. A. G. Silva ◽  
Clodualdo V. Sousa ◽  
Guilherme M. Rezende ◽  
...  
Keyword(s):  
Induction Machine ◽  
Speed Control ◽  
Induction Machines ◽  
Velocity Control ◽  
Field Orientation ◽  
Control Loops ◽  
Squirrel Cage ◽  
Three Phase ◽  
Rotor Flux ◽  
Cage Rotor

Induction machines are widely used in the industry due to their many advantages compared to other industrial machines. This article presents the study and implementation of speed control applied to a Three-phase Induction Machine (MIT) of the squirrel cage type. The induction motor was modeled using the rotor flux in the synchronous reference to design Proportional-Integral (PI) type controllers for the current and velocity control loops. It is the objective of the article also to present in detail the development of converter hardware that comprises the stages of power, acquisition, and conditioning of engine signals. The system was simulated using computational tools and validated using a prototype designed, constructed, and commissioned.

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