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The determination of induction motor losses in steel taking into account its saturation

Mykhaylo Zagirnyak (Institute of Electrical Engineering and Information Technology, Kremenchuk Mykhailo Ostrohradskyi National University, Kremenchuk, Ukraine)
Vita Ogar (Institute of Electrical Engineering and Information Technology, Kremenchuk Mykhailo Ostrohradskyi National University, Kremenchuk, Ukraine)
Volodymyr Chenchevoi (Institute of Electrical Engineering and Information Technology, Kremenchuk Mykhailo Ostrohradskyi National University, Kremenchuk, Ukraine)
Rostyslav Yatsiuk (Institute of Electrical Engineering and Information Technology, Kremenchuk Mykhailo Ostrohradskyi National University, Kremenchuk, Ukraine)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 5 January 2022

Issue publication date: 28 March 2022

68

Abstract

Purpose

This paper aims to work out a method for calculating losses in induction motor steel taking into account its saturation.

Design/methodology/approach

The theory of electric machines is applied during the analysis of induction motor equivalent circuits. The theory of Fourier series is used to determine the harmonic components of voltage, current and power. Instantaneous power theory and trigonometric transformations are used to solve algebraic and differential equations and their systems. The methods of approximation and interpolation are applied to obtain analytical expressions from the experimental data. Experimental research was carried out to verify the reliability of theoretical provisions and research results.

Findings

A method for assessing an induction machine steel as a function of the generalized electromotive force has been proposed. It allows taking into account higher harmonics of the current, which are caused by the presence of nonlinearity of an induction motor magnetic circuit.

Practical implications

The obtained results can be used in calculating the energy characteristics and operating modes of an induction motor, as well as in the construction of control systems.

Originality/value

A method for determining the losses in the stator steel of an induction motor, using a generalized electromotive force, has been proposed for the first time. It enables taking into account the currents flowing both in the stator circuit and in the rotor circuit.

Keywords

Citation

Zagirnyak, M., Ogar, V., Chenchevoi, V. and Yatsiuk, R. (2022), "The determination of induction motor losses in steel taking into account its saturation", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 41 No. 2, pp. 720-731. https://doi.org/10.1108/COMPEL-07-2021-0232

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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