ACCURACY ESTIMATION OF THE EQUIVALENT CIRCUIT PARAMETERS IDENTIFICATION OF SQUIRREL CAGE INDUCTION MOTOR
Journal Title: Електромеханічні і енергозберігаючі системи - Year 2017, Vol 1, Issue 37
Abstract
Purpose. To estimate the accuracy of T-shaped equivalent circuit parameters estimation of the squirrel cage induction motor taking into account errors in the initial experimental data. This will allow formulating the conditions of the experiment with acceptable sensitivity of the model to the errors. Methodology. The problem was solved using a series of computational experiments. The evaluation of the error effect was made as follows: the values of the input active and reactive components of the input impedance on the stator side were changed by the error value (assumed to be ±5 %). Next, the determination of each parameter was made with other parameters assumed to be known. Based on the value of the maximum deviation of the parameter, a conclusion was made about its sensitivity to the error. Results. Recommendations were formulated for determination of the equivalent circuit parameters both for stationary and rotating rotor. The analytical expression was obtained with the help of which it is possible to determine the recommended frequency of the supply voltage when identifying the active rotor resistance and the average value of the leakage inductance for stationary rotor. Originality. For the first time the numerical estimates of the sensitivity of the equivalent circuit parameters to the errors in the initial experimental values were obtained. Practical value. The use of the recommended values of stator power frequencies ensures the stability of the results of the equivalent circuit parameters identification to the presence of errors in the initial experimental data, eliminating the risk of obtaining unreliable results.
Authors and Affiliations
Oleksandr Beshta, Andriy Syomin
Keywords
Related Articles
- EP ID EP660443
- DOI -
- Views 124
- Downloads 0
CREATING A MOMENT OF RESISTANCE OF THE ELECTROMECHANICAL SYSTEM TWIN-ENGINE ELECTRIC LIFT MECHANISM SHUTTER DAM DRAIN WHEN STARTING
Purpose. The purpose of this work is to determine the factors of the formation of the moment of resistance to take them into account when creating an electric drive system. Methodology. The paper deals with the features...
ACCURACY ESTIMATION OF THE EQUIVALENT CIRCUIT PARAMETERS IDENTIFICATION OF SQUIRREL CAGE INDUCTION MOTOR
Purpose. To estimate the accuracy of T-shaped equivalent circuit parameters estimation of the squirrel cage induction motor taking into account errors in the initial experimental data. This will allow formulating the con...
AN ANALYSIS OF THE FACTORS WHICH INFLUENCE ON THE ENERGY EFFICIENCY OF POWER SUPPLY SYSTEMS
Purpose. The concern of the research is to analyze the factors of increasing the energy efficiency of production, rejection and distribution of electric energy. These are such components as reduction of technological los...
DECOMPOSITION AND LINEARIZATION OF ASYNCHRONOUS MOTOR MATHEMATICAL MODELS IN RELATIVE UNITS
Purpose. To obtain the mathematical expressions for the coefficients of linearized asynchronous motor equations in relative units, which allow making correct compensation of the separate components of the control object...
THE RESEARCH ON FREQUENCY-CONTROLLED ELECTRIC DRIVE OPERATION MODES UNDER FAULT-TOLERANT CONTROL
Purpose. In the paper the results of research on developed systems for fault-tolerant vector control, which ensure operability of frequency-controlled electric drive with presence of damages in power circuit of induction...