Toward the evaluation of the thermal state of an induction motor in the recursive short-term mode / Zyuzev A.M., Metel’Kov V.P. // Russian Electrical Engineering. - 2014. - V. 85, l. 9. - P. 554-558.

ISSN:

10683712

Type:

Article

Abstract:

The validity of assumptions accepted when deriving relations for the average loss method used to evaluate the thermal state of the induction motor is considered, and the applicability boundaries of this method are determined. The average loss method is based on the assumption that the average insulation-aging rate is linearly related to the average winding temperature. At the same time, the dynamics of the stator winding temperature substantially differs from the dynamics of the average motor temperature. Correspond-ingly, the oscillation amplitude of the stator winding can go far beyond the limits in which the evaluation of the average insulation-aging rate by the average temperature is correct. The dependence that establishes the ratio between the average insulation-aging rate per cycle and the aging rate at the temperature average per cycle for the simplest intermittent mode cycle, which includes the operation period and pause, is analyzed. The area for such combinations of the duty ratio and cycle duration, at which the use of the average loss method will be correct since the assumptions laid in the basis of this method are fulfilled quite accurately in this area, is determined based on these relations. It is shown that there is a large area with such combinations of the duty ratio and cycle duration, at which the average loss method gives the evaluation of the motor ther-mal state with a substantial error. The boundaries of the applicability area of the average loss method in a plane with coordinates “duty ratio” and “cycle duration” are determined. A combination of motor parame-ters that determine the position of the applicability area of the average loss method in these coordinates are revealed. The values of this combination of parameters for induction motors of the closed version with insu-lation class B and F are presented. © Allerton Press, Inc., 2014.

Author keywords:

Average loss method; Induction motor; Insulation thermal aging; Intermittent mode; Stator winding

Index keywords:

Electric machine insulation; Electric machine theory; Induction motors; Insulation; Stators; Thermal aging; Thermal insulation; Winding; Average loss; Cycle duration; Insulation aging; Intermittent mo

DOI:

10.3103/S1068371214090090

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922949384&doi=10.3103%2fS1068371214090090&partnerID=40&md5=a8ef73c06c30e4481116b0f1686fbf97

Соавторы в МНС:

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Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84922949384&doi=10.3103%2fS1068371214090090&partnerID=40&md5=a8ef73c06c30e4481116b0f1686fbf97
Affiliations	Ural Federal University, Russian Federation
Author Keywords	Average loss method; Induction motor; Insulation thermal aging; Intermittent mode; Stator winding
References	Usynin, Y., Butakov, S.M., Sidorenko, N., Heat model of electric drive for rolling mill (2003) Vestn. Yuzhno-Ural, 3, pp. 71-75. , Gos. Univ., Ser. Energet; Ermolin, N.P., Zherikhin, I.P., (1976) Nadezhnost’ Elek-Tricheskikh Mashin (Electrical Machines Reliability), , Leningrad: Energiya; Kotelenets, N.F., Kuznetsov, N.L., (1988) Ispytaniya I nadezhnost’ Elektricheskikh Mashin: Ucheb. Posobie Dlya Vuzov (Tests and Reliability of Electrical Machines. Student’ Book for High School), , Moscow: Vysshaya shkola; Klyuchev, V.I., (1985) Teoriya Elektroprivoda: Ucheb. Dlya Vuzov (The Theory of Electric Drive. Student’s Book for High School), , Moscow: Energoatomizdat; Shreiner, R.T., Kostylev, A.V., Krivovyaz, V.K., Shilin, S.I., (2008) Elektromekhanicheskie I Teplovye Rezhimy Asinkhronnykh Dvigatelei V Sistemakh Chastotnogo Uprav-Leniya: Ucheb. Posobie (Electromechanical and Heat Modes of Induction Motors in Frequency Control Sys-Tems. Student’s Book), , Shreiner, R.T., Ed., Yekaterin-burg: Russian State Vocational Pedagogical Univ; Zyuzev, A.M., Metel’Kov, V.P., Thermodynamical model of induction motor for electric drives with inten-sive heat generation (2010) Izv. Tul’sk. Gos, (3), pp. 138-145. , Univ. Tekhn. Nauki; Kravchik, A.E., Shlaf, M.M., Afonin, V.I., Sobo-Lenskaya, E.A., Asinkhronnye dvigateli serii 4A (1982) Sprav-Ochnik (Induction Motors of 4A Series. Handbook), , Moscow: Energoizdat; Alekseev, Y., Bogoslovskii, A.P., Pevzner, K.M., (1979) Kranovoe Oborudovanie. Spravochnik (Crane Equipment. Handbook), , Rabinovich, A.A., Ed., Mos-cow: Energiya
Publisher	Allerton Press Incorporation
CODEN	RELEE
Language of Original Document	English
Abbreviated Source Title	Russ Electr Eng
Source	Scopus