A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR

Purpose. Development of a method for calculating mechanical characteristics of induction motors, taking into consideration saturation of the magnetic path and displacement of the current in the rotor bars. Methodology. The algorithm is based on calculating the steady-state mode of induction motor op...

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Autores principales:	V. S. Malyar, A. V. Malyar, A. S. Andreishyn
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Technical University "Kharkiv Polytechnic Institute" 2019
Materias:	induction motor squirrel-cage rotor static characteristics saturation displacement of the current Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/986f85a61d714cdb963abfe301ea22d5
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spelling	oai:doaj.org-article:986f85a61d714cdb963abfe301ea22d52021-12-02T18:14:50ZA METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR10.20998/2074-272X.2019.2.022074-272X2309-3404https://doaj.org/article/986f85a61d714cdb963abfe301ea22d52019-04-01T00:00:00Zhttp://eie.khpi.edu.ua/article/view/2074-272X.2019.2.02/163252https://doaj.org/toc/2074-272Xhttps://doaj.org/toc/2309-3404Purpose. Development of a method for calculating mechanical characteristics of induction motors, taking into consideration saturation of the magnetic path and displacement of the current in the rotor bars. Methodology. The algorithm is based on calculating the steady-state mode of induction motor operation for a set slip, described by a system of non-linear algebraic equations of electrical equilibrium, whereas the mechanical characteristic is evaluated as a set of steady-state modes using parameter continuation method. The idea of the steady-state mode calculation consists in determining vectors of currents and flux linkages of the motor circuits, using which makes it possible to evaluate the electromagnetic torque, active and reactive powers, etc. Results. The study resulted in the development of a method and algorithm for calculating static characteristics of induction motors, which allows looking into the effect of different laws of voltage regulation on the mechanical characteristics, depending on the frequency change. Originality. An algorithm for calculating mechanical characteristics of the squirrel-cage induction motor was developed based on the mathematical model of the induction motor in which electromagnetic parameters are calculated using real saturation curves for the main magnetic flux and leakage fluxes, and displacement of the current in the rotor bars is evaluated by presenting the rotor winding as a multi-layer structure. Applying the transformation of the electrical equilibrium equations into the orthogonal axes enabled a significant reduction of calculation volume without impairing the accuracy of the results. Practical value. The developed algorithm allows studying the effect of different laws of scalar regulation of the voltage on the mechanical characteristics of the induction motor in order to obtain the necessary torque-speed curves for their optimization. It can be used for programming frequency converters. V. S. MalyarA. V. MalyarA. S. AndreishynNational Technical University "Kharkiv Polytechnic Institute"articleinduction motorsquirrel-cage rotorstatic characteristicssaturationdisplacement of the currentElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENRUUKElectrical engineering & Electromechanics, Iss 2, Pp 9-13 (2019)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	induction motor squirrel-cage rotor static characteristics saturation displacement of the current Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	induction motor squirrel-cage rotor static characteristics saturation displacement of the current Electrical engineering. Electronics. Nuclear engineering TK1-9971 V. S. Malyar A. V. Malyar A. S. Andreishyn A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
description	Purpose. Development of a method for calculating mechanical characteristics of induction motors, taking into consideration saturation of the magnetic path and displacement of the current in the rotor bars. Methodology. The algorithm is based on calculating the steady-state mode of induction motor operation for a set slip, described by a system of non-linear algebraic equations of electrical equilibrium, whereas the mechanical characteristic is evaluated as a set of steady-state modes using parameter continuation method. The idea of the steady-state mode calculation consists in determining vectors of currents and flux linkages of the motor circuits, using which makes it possible to evaluate the electromagnetic torque, active and reactive powers, etc. Results. The study resulted in the development of a method and algorithm for calculating static characteristics of induction motors, which allows looking into the effect of different laws of voltage regulation on the mechanical characteristics, depending on the frequency change. Originality. An algorithm for calculating mechanical characteristics of the squirrel-cage induction motor was developed based on the mathematical model of the induction motor in which electromagnetic parameters are calculated using real saturation curves for the main magnetic flux and leakage fluxes, and displacement of the current in the rotor bars is evaluated by presenting the rotor winding as a multi-layer structure. Applying the transformation of the electrical equilibrium equations into the orthogonal axes enabled a significant reduction of calculation volume without impairing the accuracy of the results. Practical value. The developed algorithm allows studying the effect of different laws of scalar regulation of the voltage on the mechanical characteristics of the induction motor in order to obtain the necessary torque-speed curves for their optimization. It can be used for programming frequency converters.
format	article
author	V. S. Malyar A. V. Malyar A. S. Andreishyn
author_facet	V. S. Malyar A. V. Malyar A. S. Andreishyn
author_sort	V. S. Malyar
title	A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
title_short	A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
title_full	A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
title_fullStr	A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
title_full_unstemmed	A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR
title_sort	method for calculating mechanical characteristics of induction motors with squirrel-cage rotor
publisher	National Technical University "Kharkiv Polytechnic Institute"
publishDate	2019
url	https://doaj.org/article/986f85a61d714cdb963abfe301ea22d5
work_keys_str_mv	AT vsmalyar amethodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor AT avmalyar amethodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor AT asandreishyn amethodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor AT vsmalyar methodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor AT avmalyar methodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor AT asandreishyn methodforcalculatingmechanicalcharacteristicsofinductionmotorswithsquirrelcagerotor
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A METHOD FOR CALCULATING MECHANICAL CHARACTERISTICS OF INDUCTION MOTORS WITH SQUIRREL-CAGE ROTOR

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