scholarly journals Reducing the Values of Initial Current and Torques of a Two-Phase Induction Motor Due to Delays of Phase Voltages

2020 ◽  
pp. 42-48
Author(s):  
Aleksey Belousov ◽  
◽  
Viktor Meshcheryakov ◽  
Keyword(s):  
Induction Motor ◽  
Two Phase ◽  
Initial Current

Model- and Information Theory-Based Diagnostic Method for Induction Motors

2005 ◽  
Vol 128 (3) ◽  
pp. 584-591 ◽  
Author(s):  
Sanghoon Lee ◽  
Michael D. Bryant ◽  
Lalit Karlapalem
Keyword(s):  
Information Theory ◽  
Induction Motor ◽  
Channel Capacity ◽  
Diagnostic System ◽  
Functional Health ◽  
State Equations ◽  
Two Phase ◽  
Squirrel Cage ◽  
Three Phase ◽  
Cage Induction Motor

Introduced is a model-based diagnostic system for motors, that also employs concepts of information theory as a health metric. From an existing bond graph of a squirrel cage induction motor, state equations were extracted and simulations performed. Simulated were various cases, including the response of an ideal motor, which functions perfectly to designer’s specifications, and motors with shorted stator coils, a bad phase capacitor, and broken rotor bars. By constructing an analogy between the motor and a communication channel, Shannon’s theorems of information theory were applied to assess functional health. The principal health metric is the channel capacity, which is based on integrals of signal-to-noise ratios. The channel capacity monotonically reduces with degradation of the system, and appears to be an effective discriminator of motor health and sickness. The method was tested via simulations of a three-phase motor; and for experimental verification, a two-phase induction motor was modeled and tested. The method was able to predict impending functional failure, significantly in advance.

Two-phase open-end winding induction motor drive using improved current source inverter

2017 ◽  
Author(s):  
Louelson A.L. de A. C. Costa ◽  
Montie A. Vitorino ◽  
Edgar R. Braga-Filho ◽  
Mauricio B.R. Correa ◽  
Darlan A. Fernandes
Keyword(s):  
Induction Motor ◽  
Current Source ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Two Phase ◽  
Current Source Inverter ◽  
Open End Winding
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