This article discusses the determination of the main parameters of a pole-changing two-speed induction motor and the issues of improving its energy efficiency. Considering that a large portion of electrical energy is consumed by electric drives, the advantages of using two-speed motors for adjustable electric drives are analyzed.

During the study, a new two-speed induction motor model was developed using the ANSYS Maxwell software, and its operating, mechanical, and dynamic characteristics were determined. According to the calculation results, the efficiency (η) of the motor is 75% at p = 3 (n = 1000 rpm) and 70% at p = 4 (n = 750 rpm). In addition, the dynamics of the starting current and torque over time were studied, confirming the operational stability of the new design.

The results show that the use of pole-changing two-speed induction motors in electric drives makes it possible to save electrical energy and natural resources, increase operational efficiency, and extend the service life of the motor.

asynchronous motor, pole-changing winding, two-speed drive, energy efficiency, ANSYS Maxwell software.

Bobojanov, M., Rismukhamedov, D., Tuychiev, F., & Shamsutdinov, Kh. (2021). Development and research of pole-changing winding for a close pole ratio. E3S Web of Conferences, 264 (CONMECHYDRO–2021), 1-7.

Bobojanov, M. (2023). Induction machine with pole-changing winding for turbomachanisms. Archives of Electrical Engineering, 72(2), 415-428. https://doi.org/10.24425/AEE.2023

Bobojanov, M.K., Rismukhamedov, D.A., Tuychiev, F.N., Shamsutdinov, Kh.F., & Magdiev, H.G. (2020). Construction and analysis of the pole-changing windings for the pole pairs ratio 5/6 by method discretely specified spatial function. International Journal of Advanced Science and Technology, 29(11s), 1410-1415.

Bobojanov, M.K., Rismukhamedov, D.A., Tuychiev, F.N., & Magdiev, Kh.G. (2022). Application of pole-changing windings for asynchronous motors of ventilation systems. Problems of Energy and Resource Saving, 4, 158-164.

Bobojanov, M.K., Rismukhamedov, D.A., Tuychiev, F.N., & Shamsutdinov, Kh.F. (2023). Development of new pole-changing winding for lifting and transport mechanisms. E3S Web of Conferences, 365, 04024 (CONMECHYDRO–2022). https://doi.org/10.1051/e3sconf/202336504024

Bobojanov, M., & Torayev, S. (2023). Saving electrical energy by using induction motors with pole-changing windings in the water supply system. E3S Web of Conferences, 384, 01045.

Bobojanov, M., Furkat, T., Hamid, N., Torayev, S.Husen, A., & Javahir, H. (2024). Determining the optimal steps of the number of fields with variable windings. E3S Web of Conferences, 497, 01014. https://doi.org/10.1051/e3sconf/202449701014