Vestnik of Samara State Technical University. Technical Sciences SeriesVestnik of Samara State Technical University. Technical Sciences Series1991-85422712-8938Samara State Technical University6101710.14498/tech.2021.3.6Research ArticleMethod for calculating the resistance of an asynchronous squirrel cage motor according to passport data and estimation of its errorKotenevViktor I.<p>Dr. Sci. (Techn.), Professor</p>kotenev.viiv@gmail.comStulovAlexander D.<p>Postgraduate Student</p>ads260391@mail.ruSamara State Technical University131020212939811015022021Copyright © 2021, Samara State Technical University2021<p>A simpler method is proposed for determining the resistances of an induction motor (total inductive resistance, active resistance of the stator and reduced active resistance of the rotor) according to reference data. Three algebraic equations are obtained from the equations of reactive power dissipation and electromagnetic power in the nominal mode and the equation of electromagnetic power in the critical mode: the first is relative to three resistances, the second is the equation of the dependence of the active resistance of the stator relative to the total inductive resistance, and the third is the active resistance of the rotor relative to the total inductive resistance. An iterative method is proposed for solving this system of equations, which gives a small error already at the second step of the calculations.</p>
<p>When assessing the error of the method, the specified values of the electromagnetic power and the multiplicity of the maximum torque were used, which are expressed relative to the reference resistances of the control motors. An estimate is given of the total error from the imperfection of the method and the discrepancy between the reference values of the multiplicity of the maximum torque and power on the motor shaft with their refined values calculated from the resistances from the reference book.</p>
<p>Based on the calculated resistances in the nominal mode, the dependences of the active and inductive resistances of the motor are constructed using an accurate and approximate method.</p>methodcalculationresistanceinduction motorestimateerrorметодрасчетсопротивлениеасинхронный двигательоценкапогрешность[Kotenev V.I., Kochetkov V.V., Elkin D.A. The reactive power control of the power system load node at the voltage instability of the power supply, in 2017 International Siberian Conference on Control and Communications (SIBCON), 2017.][Kotenev A.V. et al. Electrical engineering unit for the reactive power control of the load bus at the voltage instability // Journal of Physics: Conference Series. 2018. № 1.012064.][Moshchinsky Yu.A., Bespalov V.Ya., Kiryatkin A.A. Determination of the parameters of the equivalent circuit of an asynchronous machine according to catalog data // Electricity. 1998. No. 4. Рр. 38–42.][Usoltsev A.A., Lukichev D.V. Determination of the parameters of the model of an asynchronous motor according to reference data // Izvestiya VUZov. Instrumentation. 2008. No. 10. Рр. 35–41.][Makeev M.S., Kuvshinov A.A. Algorithm for calculating the parameters of the equivalent circuit of an induction motor according to catalog data // Vector of Science of Togliatti State University. 2013. No. 1 (23). Рр. 108–112.][Suite P.P., Semkin B.V. Determination of the parameters of the equivalent circuit of low-power asynchronous motors // Polzunovsky Almanac. Altai state those. un-t them. I.I. Polzunova (Barnaul) 2004. No. 3. Рр. 96–99.][Kotenev A.V., Kotenev V.I., Kochetkov V.V. Determination of the resistances of a squirrel-cage motor according to catalog data // Bulletin of the Samara State Technical University. Series of Engineering Science. 2016. No. 1 (49). Рр. 103–106.][Kotenev A.V., Kotenev V.I., Kochetkov V.V. Determination of the parameters of the equivalent circuit of an asynchronous motor with a squirrel-cage rotor according to reference data // Izvestiya vuzov. Electromechanics. 2016. No. 6 (548). Рр. 13–17.][Syromyatnikov I.A. Operating modes of asynchronous and synchronous motors, L.I. Mamikonyants (ed.). 4th ed. Revised. and add. Moscow: Energoatomizdat, 1984. 240 р.][Jin Zhao, Bimal K. Neural-network-based waveform Processing and Delayless filtering in power electronics and AC drives // IEEE Transactions on Industrial Electronics. 2004. № 5. Рр. 981–991.][Megherbi A.C. et al. Parameter identification of induction motors using variable-weighted cost function of genetic algorithms // Journal of Electrical Engineering & Technology. 2010. № 4. Рр. 597–605.][Jin Z., Bose B.K. Evaluation of membership functions for fuzzy logic controlled induction motor drive // IEEE 2002 28th Annual Conference of the Industrial Electronics Society. IECON 02. 2002. Vol. 1. Рр. 229–234.][Bolovin E., Glazyrin A., Polichshuk V. Induction Motor Drive Parameters Identification Applying Difference Schemes // Applied Mechanics and Matterials. 2015. Рр. 65–68.][Rechberger K., Coefler H. Analytical approach to calculate the transient state of doubly fed synchronous machines employing the steady state circle diagram of the machine // 15th International Conference on Electrical Machines “ICEM 2002”. August 25–28. 2002. Brugge. Belgium. 2002.][Kravchik A.E. et al. Asynchronous motors of the 4A series: a reference book. M.: Energoatomizdat, 1982.][Kostenko M.P., Piotrovsky L.M. Electric cars. L.: Energy, 1973. 648 p.]