A new method of determining rotor leakage reactance and resistance of a three-phase induction motor

1959 ◽  
Vol 106 (25) ◽  
pp. 46
Author(s):  
M.V. Deshpande ◽  
T.R. Subrahmanyan
2014 ◽  
Vol 1008-1009 ◽  
pp. 1039-1051 ◽  
Author(s):  
Lamiaâ El Menzhi ◽  
Abdallah Saad

In this paper, a new method for voltage inverter feeding induction motor fault diagnosis is presented. It is based on the so-called the Lissajous curve of an auxiliary winding voltage Park components. For this purpose, time domain mathematical model of a three phase induction motor fed by an inverter and expressions of the inserted winding voltage and its Park components are presented. Simulation results curried out for non defected and defected inverter show the effectiveness of the proposed method.


Author(s):  
Karan S Belsare ◽  
Gajanan D Patil

A low cost and reliable protection scheme has been designed for a three phase induction motor against unbalance voltages, under voltage, over voltage, short circuit and overheating protection. Taking the cost factor into consideration the design has been proposed using microcontroller Atmega32, MOSFETs, relays, small CTs and PTs. However the sensitivity of the protection scheme has been not compromised. The design has been tested online in the laboratory for small motors and the same can be implemented for larger motors by replacing the i-v converters and relays of suitable ratings.


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