scholarly journals DETERMINATION OF EQUIVALENT CIRCUIT PARAMETERS OF INDUCTION MOTORS BY USING HEURISTIC ALGORITHMS

2017 ◽  
Vol 5 (2) ◽  
pp. 170-182 ◽  
Author(s):  
Murat SELEK ◽  
Hakan TERZİOĞLU
Keyword(s):  
Equivalent Circuit ◽  
Induction Motors ◽  
Heuristic Algorithms ◽  
Equivalent Circuit Parameters

scholarly journals Estimation of the Equivalent Circuit Parameters of Induction Motors by Laboratory Test

Machines ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 340
Author(s):  
Moshe Averbukh ◽  
Efim Lockshin
Keyword(s):  
Equivalent Circuit ◽  
Induction Motors ◽  
Simple Algorithm ◽  
Accurate Method ◽  
Open Circuit ◽  
Parameters Estimation ◽  
Electrical Machine ◽  
Power Prediction ◽  
Equivalent Circuit Parameters

The determination of equivalent circuit parameters for AC induction motors represents an important task in an electrical machine laboratory. Frequently used open-circuit and short current tests answer these requirements. However, the results have a low accuracy. This becomes especially obvious when the equivalent circuit is applied for the motor current and power prediction. The main obstacles in this circumstance lie in the difficulty of providing a pristine open-circuit test, the lack of which causes errors in parameter estimation. A much more accurate approach can be carried out with a test including several output points with measurements of the motor torque, velocity, current, and power magnitudes. Nevertheless, a relatively simple and accurate method to ensure determining parameters for such tests does not exist. This article tries to provide such a method by an approach based on Kloss’s simplified equation and the Thevenin theorem. The significant novelty of the method is the specially selected synergetic interaction between the analytical and numerical approaches, which give a relatively simple algorithm with a good accuracy and a convergence of the parameters’ estimation.

Augmented Short-Circuit Test for the Measurement of Transformer Equivalent-Circuit Parameters with Large Series Branch Impedances

2010 ◽  
Vol 47 (1) ◽  
pp. 86-93
Author(s):  
Saurabh Kumar Mukerji ◽  
Moleykutty George
Keyword(s):  
Equivalent Circuit ◽  
High Voltage ◽  
Single Phase ◽  
Short Circuit ◽  
Large Series ◽  
Test Results ◽  
Voltage Supply ◽  
Short Circuit Test ◽  
Equivalent Circuit Parameters

An augmented short-circuit test is described for the determination of equivalent-circuit parameters of single-phase transformers with large series-branch impedances. This test may be conducted at rated currents with the transformer connected to a reduced voltage supply. Thus harmonics in current and voltage waves are negligible. This test is therefore free from harmonics-associated errors. Based on test results, phasor equations are found which give formulae for the equivalent-circuit parameters with series-branch impedance split into low- and high-voltage components.

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