Temperature estimation and vibration monitoring for induction motors

2017 ◽  
Author(s):  
Xiaodong Liang
Keyword(s):  
Induction Motors ◽  
Vibration Monitoring ◽  
Temperature Estimation

A Remote and Sensorless Stator Winding Temperature Estimation Method for Thermal Protection for Induction Motor

2014 ◽  
Vol 3 (3) ◽  
pp. 53-72 ◽  
Author(s):  
T. A. Enany ◽  
W. I. Wahba ◽  
M. A. Moustafa Hassan
Keyword(s):  
Thermal Behavior ◽  
Induction Motor ◽  
Induction Motors ◽  
Thermal Protection ◽  
Electrical Machine ◽  
Stator Winding ◽  
Temperature Estimation ◽  
Matlab Simulink ◽  
Soft Starter ◽  
Drive Signals

Three-phase induction motors are the “workhorses” of industry; they are the most widely used electrical machine; because of its simple structure and high reliability. This paper proposes a new technique to model the stator winding of the induction motor in Matlab Simulink® software. This simulation of the induction motor would have the thermal behavior of its stator winding; to study the induction motor temperature estimation using motor parameter-based method. The modified model is used to validate a remote and Sensorless stator winding temperature estimation technique; therefore a thermal protection is obtained for soft-starter-connected to induction motors. The soft-starter is used to inject a DC signal in the induction motor terminal voltage and current. The stator winding resistance/temperature is estimated from DC signal injection by changing the gate drive signals of the Thyristor in the soft starter. The level of the injected DC signal is adjusted by the value of the delay angle. The accuracy of stator winding temperature estimation increased with the increase of DC signal level; however the pulsation of the output torque increased also. The thermal behavior is simulated utilizing a thermal resistor block from the Matlab Simscape™ software. It is used to replace the fixed resistor value of the induction motor model in the Matlab Simulink. The thermal monitoring scheme has been validated from the simulation results of a 7.5 kW induction motor under various loading conditions.

Lateral and Torsional Vibration Monitoring of Multistack Rotor Induction Motors

2021 ◽  
Vol 68 (4) ◽  
pp. 3494-3505
Author(s):  
Mohsen Zafarani ◽  
Bashir H. Jafari ◽  
Bilal Akin
Keyword(s):  
Torsional Vibration ◽  
Induction Motors ◽  
Vibration Monitoring
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