A New Method for Diagnostics of Faults of Three-phase Squirrel Cage Asynchronous Motor

2019 ◽  
Author(s):  
Osman Zeki Erbahan ◽  
İbrahim Aliskan ◽  
Rıdvan Keskin
Keyword(s):  
Asynchronous Motor ◽  
New Method ◽  
Squirrel Cage ◽  
Three Phase

Detection of Stator and Rotor Faults in Asynchronous Motor Using Artificial Intelligence Method

2018 ◽  
pp. 278-285
Author(s):  
K. Vinoth Kumar ◽  
Prawin Angel Michael
Keyword(s):  
Induction Motor ◽  
Asynchronous Motor ◽  
Feed Forward Neural Network ◽  
Identification Scheme ◽  
Hardware System ◽  
Rotor Faults ◽  
Squirrel Cage ◽  
Three Phase ◽  
Neural Network Structure ◽  
Trained Network

This chapter deals with the implementation of a PC-based monitoring and fault identification scheme for a three-phase induction motor using artificial neural networks (ANNs). To accomplish the task, a hardware system is designed and built to acquire three phase voltages and currents from a 3.3KW squirrel-cage, three-phase induction motor. A software program is written to read the voltages and currents, which are first used to train a feed-forward neural network structure. The trained network is placed in a Lab VIEW-based program formula node that monitors the voltages and currents online and displays the fault conditions and turns the motor. The complete system is successfully tested in real time by creating different faults on the motor.

The Boot Method Analysis of Three-Phase Asynchronous Motor

2013 ◽  
Vol 401-403 ◽  
pp. 308-311 ◽  
Author(s):  
Miao Shang ◽  
Guo Min Lin ◽  
Qiang Hua Guo ◽  
Yong Tao Sun
Keyword(s):  
Asynchronous Motor ◽  
Advantages And Disadvantages ◽  
Squirrel Cage ◽  
Asynchronous Motors ◽  
Three Phase ◽  
Method Analysis ◽  
Starting Torque

The boot method of three wound-rotor asynchronous motors and three-phase squirrel-cage asynchronous motor are described; As to reduce the start current and to increase the starting torque, the principle of all kinds of startup methods are analyzed; the advantages and disadvantages of various starting methods are evaluated; Development directions of modern motor startup are pointed out.

The Mechanical Transient Process at Asynchronous Motor Oscillating Mode

2009 ◽  
Vol 25 (25) ◽  
pp. 23-26
Author(s):  
Uldis Antonovičs ◽  
Viesturs Bražis ◽  
Jānis Greivulis
Keyword(s):  
Transient Process ◽  
Single Phase ◽  
Asynchronous Motor ◽  
Half Period ◽  
Transient Processes ◽  
Negative Voltage ◽  
Stator Windings ◽  
Squirrel Cage ◽  
Three Phase ◽  
Oscillating Mode

The Mechanical Transient Process at Asynchronous Motor Oscillating ModeThe research object is squirrel-cage asynchronous motor connected to single-phase sinusoidal. There are shown, that by connecting to the stator windings a certain sequence of half-period positive and negative voltage, a motor rotor is rotated, but three times slower than in the three-phase mode. Changing the connecting sequence of positive and negative half-period voltage to stator windings, motor can work in various oscillating modes. It is tested experimentally. The mechanical transient processes had been researched in rotation and oscillating modes.

Advanced Fault Diagnosis Monitoring Scheme in Asynchronous Motor Using Soft Computing Method

2019 ◽  
pp. 89-97
Author(s):  
K. Vinoth Kumar ◽  
Ramya K. C. ◽  
Muhammad Irfan
Keyword(s):  
Induction Motor ◽  
Asynchronous Motor ◽  
Feed Forward Neural Network ◽  
Hardware System ◽  
Squirrel Cage ◽  
Soft Computing Method ◽  
Three Phase ◽  
Neural Network Structure ◽  
Computing Method ◽  
Trained Network

This chapter deals with the implementation of a PC-based monitoring and fault identification scheme for a three-phase induction motor using artificial neural networks (ANNs). To accomplish the task, a hardware system is designed and built to acquire three phase voltages and currents from a 3.3KW squirrel-cage, three-phase induction motor. A software program is written to read the voltages and currents, which are first used to train a feed-forward neural network structure. The trained network is placed in a Lab VIEW-based program formula node that monitors the voltages and currents online and displays the fault conditions and turns the motor. The complete system is successfully tested in real time by creating different faults on the motor.

scholarly journals Research of current distribution by phases in asynchronous electric motor with a combined winding

2022 ◽  
Vol 23 (5) ◽  
pp. 150-159
Author(s):  
K. V. Martynov ◽  
L. A. Panteleeva ◽  
D. A. Vasiliev ◽  
E. V. Dresvyannikova
Keyword(s):  
Electric Motor ◽  
Short Circuit ◽  
Asynchronous Motor ◽  
Experimental Sample ◽  
Energy Characteristics ◽  
The Real ◽  
Squirrel Cage ◽  
Three Phase ◽  
Cage Rotor ◽  
Asynchronous Electric Motor

THE PURPOSE. The asynchronous electric motor with a squirrel cage rotor is widely used in the electric driven industry and agricultural machinery. One of the possible ways to improve its energy characteristics is to use a combined 12-zone stator winding instead of the standard 6-zone one. However, in a combined winding with a parallel connection of the «star» and «delta» phases, the phases may not be loaded equally. Therefore, the main purpose of the work under analysis is to study the distribution of currents between the phases of the «star» and «delta» in the asynchronous motor with a combined winding.METHODS. The study was performed on the AIR71V4 engine, rewound onto a combined winding, in which the real ratio of the active resistances of the «delta» and «star» turned out to be 7% less than the theoretical one. The tests were carried out in no-load and short-circuit mode when powered from a three-phase network, as well as in short-circuit mode when one of the line wires is broken.RESULTS. The work gives the values of the currents flowing through the phases of the combined winding. For the experimental sample, the deviation of the obtained currents from the theoretical values is determined. Equations of currents are obtained when one of the linear wires is broken. Schemes for switching on the main contacts of a thermal relay for a motor with a combined winding are proposed.CONCLUSION. The results of the study showed that in an asynchronous motor with a combined winding, in which the real ratio of the active resistances of the «delta» and «star» is less than the theoretical one, the current is not proportionally distributed over the phases. The most preferred circuit for switching on a thermal relay is one in which its main contacts are connected to the «delta» phases, and the thermal relay must be three-pole.

Breaks Strip Breakdown with the Parameter Identification Law Diagnosis Mouse Cage Asynchronous Motor Rotor

2013 ◽  
Vol 291-294 ◽  
pp. 2549-2552
Author(s):  
Qiao Shan Wu
Keyword(s):  
Parameter Identification ◽  
Scientific Method ◽  
Asynchronous Motor ◽  
Squirrel Cage ◽  
Rotor Resistance ◽  
Resistance Variation ◽  
Three Phase ◽  
Steady State Model ◽  
Motor Parameter ◽  
Effects Of Temperature

According to the three-phase squirrel-cage asynchronous motor rotor broken bar fault, presented with parameters identification method of asynchronous motor parameter identification to monitoring and diagnosis of rotor resistance variation of rotor bar breaking principle. Choose a three-phase squirrel-cage asynchronous motor in three working points of experiments, results show that the method is correct and feasible. This method is based on the three-phase squirrel-cage asynchronous motor steady state model parameter equation, using the method of least squares identification parameters, and consider the effects of temperature on the parameters, by the parameter variation in diagnosis of broken rotor bar fault. Advantages of simple scientific method, this method can also be used in conjunction with other methods and, on the three-phase squirrel-cage asynchronous motor rotor has no fault diagnosis.

The Software Solution of the Overload Capacity of a Three-Phase Asynchronous Motor

2020 ◽  
Author(s):  
Rano Gazieva ◽  
Sharafidin Aynakulov ◽  
Aziz Nigmatov ◽  
Barna Rakhmankulova ◽  
Otabek Khafizov ◽  
...  
Keyword(s):  
Asynchronous Motor ◽  
Three Phase ◽  
Overload Capacity
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