SINCHRONOUS MOTORS WITH REACTIVE ROTORS AND HIGHER ROTATION SPEED

DOI: 10.47026/1810-1909-2023-2-55-63

УДК 621.396.6

ББК 31.264.5

Anatoly Yu. AFANASYEV, Valeriy G. MAKAROV, Stanislav V. IGNAEV, Alexey A. PETROV

Key words

synchronous motor, reactive rotor, increased rotation speed, electromagnetic excitation, electromagnetic torque

Abstract

An urgent task for many enterprises of the petrochemical and fuel and energy complex, using pumps, fans and compressors in their technological processes, is to increase the speed of rotation of these turbomechanisms. An increase in the speed of rotation of such mechanisms is due to an increase in their productivity. Quite often, obtaining increased rotation speed is an urgent task for both automation devices and special equipment.

The purpose of the study is to analyze the possibility of building synchronous motors with a jet rotor and a different number of phases of the stator winding, as well as an AC fixed excitation winding, which is located between the rotor and the stator.

Materials and methods. The object of research in the article is synchronous motors with a jet rotor, which have an increased speed of rotation. The methods of theoretical foundations of electrical engineering and the theory of electromechanical energy conversion are applied in the work. Calculations are performed using the Turbo Pascal programming environment.

Results of the study. The main results of the study are the proposed design solutions for synchronous motors with jet rotors and a different number of phases of the stator winding from one to six, as well as a mathematical description of electromagnetic processes, with the help of which the moment characteristics were calculated in the Turbo Pascal system. When developing a mathematical description of electromagnetic processes in synchronous motors with reactive rotors and the number of phases of the stator winding from one to six, analytical methods of the theoretical foundations of electrical engineering and the theory of electromechanical energy conversion are used. Based on the studies carried out, the possibility of obtaining a rotor rotation speed of 6000 rpm at frequency of 50 Hz is shown, while commercially available synchronous and asynchronous motors do not allow obtaining rotation speeds of more than 3000 rpm when powered by a network of the same frequency. The expediency and effectiveness of the use of a fixed alternating current excitation winding, which is located between the rotor and the stator, has been proven. The moment characteristics of synchronous motors with the number of phases of the stator winding from one to six are calculated.

Findings. The study revealed the feature of a synchronous motor with a single-phase stator winding, which consists in the fact that the motor moment can only be created by the excitation winding without the stator winding.

References

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Information about the authors

Anatoly Yu. Afanasyev – Doctor of Technical Sciences, Professor, Department of Electrical Equipment, Kazan National Research Technical University n.a. A.N. Tupolev – KAI, Russia, Kazan (afanasiev_eo@mail.ru).

Valeriy G. Makarov – Doctor of Technical Science, Head of the Department of Electric Drive and Electrical Engineering, Kazan National Research Technological University, Russia, Kazan (vg_makarov@mail.ru).

Stanislav V. Ignaev – Master’s Program Student, Department of Automation and Control, Kazan National Research Technical University n.a. A.N. Tupolev, Russia, Kazan (ignaev99@gmail.com).

Alexey A. Petrov – Post-Graduate Student, Department of Automation and Control, Kazan National Research Technical University named after A.N. Tupolev – KAI, Russia, Kazan (PetrovAlekse@mail.ru).

For citations

Afanasyev A.Yu., Makarov V.G., Ignaev S.V., Petrov A.A. SINCHRONOUS MOTORS WITH REACTIVE ROTORS AND HIGHER ROTATION SPEED. Vestnik Chuvashskogo universiteta, 2023, no. 2, pp. 55–63. DOI: 10.47026/1810-1909-2023-2-55-63 (in Russian).

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