Allowance for the Influence of Temperature Fluctuations on the Induction Motor Stator Winding Thermal Resource

A.M. Zyuzev, V.P. Metelkov


The work is aimed at solving the problem of reducing the accident rate of induction motors, increase the service life and efficiency of their use by improving the accuracy of the estimation of the thermal state at the design stage and during the exploitation. The paper discusses the problem of determining the limits of applicability of the average loss method for estimating the thermal state of asynchronous motors in intermittent mode and refinement of this method, taking into account the nonlinear coupling between rate of aging of insulation and temperature, as well as the ratio of the cycle parameters and the thermal time constant of the motor. We used analytical methods and computer experiment, based on the five-mass thermodynamic model of the induction motor. It is found that there exist such combinations of parameters of cycle in intermittent mode for which evaluation of the thermal state of the induction motor by the average loss method is incorrect. We propose a refined method of estimating the thermal state of the induction motor by the traditional average loss method by introducing a correction coefficient that takes into account the nonlinear coupling of the rate of aging of insulation from the stator winding temperature, we obtain formulas for the calculation of this coefficient. It is shown that within the formal borders of intermittent mode (cycle time no more than 10 min), divergence between the results obtained analytically and via five masses thermodynamic model of the induction motor used in the computational experiment is quite small and does not exceed 6...8%.

Full Text:



Sorkind M. Universalnaya zashchita dlya asinkhronnogo dvigatelya: miph ili realnost? [Versatile protection for induction motors: myth or reality?]. Available at: ronnogo_elektrodvigatelya_mif_ili_realnost_.html (accessed 9 November 2014). (in Russ.)

Venkataraman B., Godsey B., Premerlani W., Shulman E. etc. Fundamentals of a motor thermal model and its applications in motor protection, Proceedings of 58th Annual Conference “Protective Relay Engineers”, USA, Kansas City, 2005, pp. 127-144.

Grundulis A.O. Zashchita elektrodvigatelei v selskom khozyaistve [Electric motor protection in agriculture], Moscow, Kolos, 1982, 140 p. (in Russ.)

Polkovnichenko D.V. Post-maintenance technical evaluation of cage induction motors [Posleremontnaia otsenka tekhnicheskogo sostoianiia korotkozamknutykh asinkhronnykh elektrodvigatelei], Nauchye zhurnaly NTU "KhPI": Elektrotekhnika i elektromekhanika [Scientific journals NTU "KPI": Electronics and Electrical Engineering], 2005, no. 1, pp. 59-62. (in Russ.)

Ponomarev V.A., Suvorov I.F. An integrated method for diagnosis of asynchronous motors based on the use of artificial neural networks [Kompleksnyi metod diagnostiki asinkhronnykh elektrodvigatelei na osnove ispol'zovaniia iskusstvennykh neironnykh setei], Novosti elektrotekhniki [News of electrical engineering], 2011, no. 2 (68). (in Russ.)

Vorobyov N.P., Vorobyova S.N., Sukhankin G.V., Gertsen N.T. Methods and tools for diagnosing the insulation of asynchronous motors [Metody i pribory diagnostirovaniya izolyatsii asinkhronnykh elektrodvigatelei], Polzunovskiy vestnik [Herald of Polzunovsky], 2011, no. 2/2, pp. 261-269. (in Russ.)

Pakhomov A.I. Metody i sredstva diagnostiki izolyacii asinkhronnykh dvigatelei selskokhozyaistvennogo proizvodstva na osnove chastichnykh razryadov: dis. … doktora techn. nauk [Methods and tools for the diagnosis of asynchronous motors isolation of agricultural production on the basis of partial discharges: the thesis of Doctor of Technical Sciences], Krasnodar, 2008, 347 p. (in Russ.)

Engelmann R.H., Middendorf W.H. Handbook of electric motors, New York, Marcel Dekker, 1995, pp. 375-456.

Vedyashkin M.V., Muravlyov O.P. Estimation of parameters of the laws of distribution of stator windings failures in the operation of asynchronous motors for crane [Otsenka parametrov zakona raspredeleniya otkazov obmotok statorov pri ekspluatacii kranovykh asinkhronnykh dvigatelei], Izvestiya Tomskogo politekhnicheskogo universiteta [Bulletin of the Tomsk Polytechnic University], 2011, vol. 319, no. 4, pp. 117-121. (in Russ.)

Tonkikh V.G. Metod diagnostiki asinkhronnykh elektrodvigatelei v sel'skom khoziaistve na osnove analiza ikh vneshnego magnitnogo polia: diss. … kand techn. nauk [Method of asynchronous motors diagnosis in agriculture on the basis of their external magnetic field: the thesis of PhD], Barnaul, 2009, 181 p. (in Russ.)

Kotelenets, N.F., Kuznetsov N.L., Ispytaniya i nadezhnost elektricheskikh mashin: Ucheb. posobie dlya vuzov [Electric machines: Student’s Book for High School], Moscow, Vysshaya shkola, 1988, 232 p. (in Russ.)

Onischenko G.B., Junkov M.G. Power drive systems development problems and prospects [Problemy i perspektivy razvitiya elektroprivoda]. Trudy VIII Mezhdunarodnoy (XIX Vserossiyskoy) konferencii po avtomatizirovannomu elektroprivodu [Proc. of the VIII Int. (XIX All-Russian) conf. on the automatic electric drive], Saransk, 2014, pp. 5-9. (in Russ.)

Boglietti A., Cavagnino A., Staton D., Shanel M., Mueller M., Mejuto C. Evolution and modern approaches for thermal analysis of electrical machines, IEEE Transactions On Industrial Electronics, 2009, vol. 56, no. 3, pp. 871-882. DOI: 10.1109/TIE.2008.2011622

Kylander G. Thermal modelling of small cage induction motors: Technical report no. 265, Goteborg, Sweden, Chalmers University of Technology, 1995, 113 p.

Usynin Yu.S., Butakov S.M., Sidorenko N.Yu. Heat model of electric drive for rolling mill [Teplovaya model elektrodvigatelya prokatnogo stana]. Vestnik Yuzhno-Uralskogo gosudarstvennogo universiteta. Seriya Energetika [Bulletin of the South Ural State University. Series Power Engineering], 2003, vol. 3, no. 11, pp. 71-75. (in Russ.)

Klyuchev V.I. Teoriya elektroprivoda: Ucheb. dlya vuzov [The theory of electric drive: Student’s Book for High School], Moscow, Energoatomizdat, 1985, 560 p. (in Russ.)

Shreiner R.T., Kostylev A.V., Krivovyaz V.K., Shilin S.I. Elektromekhanicheskie i teplovye rezhimy asinkhronnykh dvigatelei v sistemakh chastotnogo uprav_leniya: ucheb. posobie [Electromechanical and heat modes of induction motors in frequency control systems: Student’s Book], Yekaterinburg, 2008, 361 p. (in Russ.)

Zyuzev A.M., Metelkov V.P. Thermodynamic models for asynchronous motor heating tests, Russian Electrical Engineering, 2012, vol. 83, no. 9, pp. 512-515. DOI: 10.3103/S1068371212090131

Kuznetsov N.L. Nadezhnost elektricheskikh mashin [Electric machines reliability], Moscow, Izdatelskiy dom MEI, 2006, 432 p. (in Russ.)

Brancato E L. Estimation of lifetime expectancies of motors, IEEE Electrical Insulation. Magazine, 1992, vol. 8, no. 3, pp. 5-13. DOI: 10.1109/57.139066

Zyuzev A.M., Metelkov V.P. Thermodynamic model of induction motor for electric drives with intensive heat release [Termodinamicheskaya model asinkhronnogo dvigatelya dlya elektroprivodov s intensivnymi processami teplovydeleniya]. Izvestiya TulGU. Tekhnicheskie nauki (Bulletin of Tula State University. Engineering Sciences), Tula, TulGU, 2010, iss. 3, part 1, pp. 138-145. (in Russ.)

Zyuzev A.M., Metelkov V.P. Toward the evaluation of the thermal state of an induction motor in the recursive shortterm mode, Russian Electrical Engineering, 2014, Vol. 85, no. 9, pp. 554-558. DOI: 10.3103/S1068371214090090

Braslavskiy I.Ya., Ishmatov Z.Sh., Polyakov V.N. Energosberegayushchiy asinkhronnyy elektroprivod [Energy-efficient asynchronous electric drive], Moscow, Izdatelskiy tsentr “Academiya”, 2004, 256 p. (in Russ.)

Gotter G. Nagrevanie i okhlazhdenie elektricheskikh mashin [Heating and cooling of electrical machines], Moscow, Leningrad, Gosenergoizdat, 1961, 480 p. (in Russ.)

Ermolin N.P., Zherikhin I.P. Nadezhnost elektricheskikh mashin [Reliability of electrical machines], Leningrad, Energiya, 1976, 248 p. (in Russ.)

Zyuzev A.M., Metelkov V.P., Maksimova V.A. Modern approaches to the study of thermal and electrodynamic processes in asynchronous electric drive [Sovremennye podhody k issledovaniyu teplovykh i elektrodinamicheskikh processov v asinkhronnom elektroprivode], Elektromechanicheskie preobrazovateli energii: Materialy VI Mejdunar. nauchno-tekhn. konf. [Proc. of the VI International Scientific and Technical Conference “Electromechanical energy converters”], Tomsk, 2013, pp. 40-44. (in Russ.)



  • There are currently no refbacks.

Copyright (c) 2016 A.M. Zyuzev, V.P. Metelkov

© Russian Internet Journal of Electrical Engineering. ISSN 2313-8742


Another version of the web site: