COMPUTER MODELING METHOD OF HEATING THE WINDINGS OF ELECTRIC MOTORS OF PUMPING UNITS DURING STARTING OPERATING MODES

This work is devoted to the study of the heating of electric motor windings in large pump units using computer modeling. The article focuses on the starting mode of electric motors, which involves complex transient processes. The object of study is a synchronous motor of the VDS2-325 series with a power of 8 MW, which serves as the electric drive for a pumping unit. Computer modeling often requires algorithms or mathematical equations and expressions describing various patterns. In addition, modeling technical objects often requires technical parameters that can only be determined by calculation. Taking into account all of these features, this article proposes a method for computer modeling of the heating of pumping unit electric motor windings during starting modes. Modeling is performed in relative units, taking into account various types of electric motor starting, such as direct and soft starts. A soft start of a pumping unit electric motor is achieved using a soft starter, while direct starting involves directly connecting power to the motor. Direct starting of powerful electric motors leads to negative consequences, such as unacceptable heating in the windings, vibrations in the mechanical parts of the equipment, and voltage drops in the power system of the pumping station.

synchronous motor, pump unit, winding heating, starting mode, computer modeling, soft start.

1. Chernykh, I. V. (2008). Modeling of electrical engineering devices in MATLAB SimPowerSystem and Simulink. Moscow: DMK Press, 288 p.

2. Dadabaev, Sh. T. (2017). Computer simulation of heating of synchronous electric drives of pumping units under various starting methods. In: Proceedings of the International Scientific and Technical Conference “Advanced Information Technologies (PIT 2017)”, Samara, March 14–16, 2017. Samara: Samara Scientific Center of the Russian Academy of Sciences, pp. 76–80. EDN YOWNQF.

3. Dadabaev, Sh. T., & Gracheva, E. I. (2022). Techno-economic justification of applying soft-start systems for high-voltage electric motors of pumping units. Proceedings of Higher Educational Institutions. Energy Sector Problems, Vol. 24, No. 1, pp. 141–150. DOI: 10.30724/1998-9903-2022-24-1-141-150. EDN ABQKWK.

4. Dadoboev, Sh. T. (2023). Development of measures to increase the technical service life of electrical equipment at high-capacity pumping stations. Bulletin of PITTU named after Academician M. S. Osimi, No. 2(27), pp. 47–58. EDN ELQSQL.

5. Dadoboev, Sh. T., & Komilova, M. E. (2024). Study of transient processes in the power system under regular commissioning of high-capacity pumping units. Bulletin of PITTU named after Academician M. S. Osimi, No. 2(31), pp. 45–53. EDN DKHLOW.

6. Dadoboev, Sh. T., & Vokhidov, A. J. (2024). Transient processes in the power system of an irrigation pumping station during direct connection of high-capacity units. Bulletin of PITTU named after Academician M. S. Osimi, No. 1(30), pp. 38–45. EDN UAWOUP.

7. Donskoy, N. V. (2007). Adjustable AC electric drives. Cheboksary: Publishing House of Chuvash State University, 204 p. EDN QMJPUH.

8. Kalinin, A. G. (2011). Research and development of energy-efficient operating modes of electric drives in power supply systems. PhD dissertation (specialty 05.09.03 “Electrotechnical complexes and systems”). Cheboksary, 137 p.

9. Neiman, Z. B. (1974). Large vertical AC electric motors. Moscow: Energiya, 376 p.

10. Shepelin, V. F., Donskoy, N. V., & Fedorov, B. S. (2006). Starting modes of synchronous motors under heavy starting conditions. Elektrotekhnika, No. 2, pp. 34–40.

2026-04-03