INCREASE IN THE ELECTROMAGNETIC MOMENT OF A SUPERMINIATURE ELECTRIC MOTOR EXCITED BY RARE EARTH PERMANENT MAGNETS

Roman A. Romanov, Tatyana V. Myasnikova, Alexey N. Matyunin

DOI: 10.47026/1810-1909-2021-1-111-121

Key words

superminiature electric machine, superminiature valve electric motor, polycapillary technology, rare earth magnets, magnetic induction, electromagnetic moment.

Annotation

The article is devoted to improving the energy and performance characteristics of superminiature electric motors, which are widely used in modern devices of robotics and mechanotronics. With the development of digital and Autonomous robotic systems, the tasks of improving the efficiency of Executive micromechanisms that affect the functionality and duration of work in offline mode have become particularly relevant. Traditional design and technological solutions used in higher-power electric machines are not scalable to the field of superminiature electric machines. Domestic and foreign developers offer various design options and manufacturing technologies. The key design feature of the electric motor under consideration is a glass stator made by polycapillary fiber technology and an excitation system from rare-earth permanent magnets. In the wall of the glass case, holes are evenly distributed around the circumference, in which the control winding is laid. The motor excitation system is a two-pole permanent magnet located on the rotating rotor shaft. The purpose of the research is to determine the effect of changing the design of the excitation system by changing the location of the magnetic poles. The research uses software that simulates the electromagnetic field using the finite element method. In the course of research, it was found that a decrease in the body of a permanent magnet leads to a decrease in the electromagnetic moment, which is not compensated by a decrease in edge effects at the boundary of the poles of the magnet. However, an increase in the value of the maximum magnetic induction in the air gap allows us to conclude that edge effects at the pole boundary have a significant effect on reducing the energy characteristics of superminiature micromachines. Thus, the solutions proposed in this paper are not sufficient to increase the efficiency of the engine, but the data obtained indicate the need to reduce the edge effects of permanent magnets.

References

1. Afanasyev A.A., Belov V.V., Efimov V.V., Nikolaev A.V. Metod udel’noi magnitnoi provodimosti v raschetakh radial’nykh i tangentsial’nykh magnitnykh polei magnitoelektricheskikh mashin [Method of specific magnetic conductivity in calculations of radial and tangential magnetic fields of magnetoelectric machines]. Elektrichestvo, 2013, no. 4, рр. 39–44.
2. Lifanov V.A., Pomogaev G.V., Ermolin N.P. Raschet elektricheskikh mashin maloi moshchnosti [Calculation of low-power electric machines]. Chelyabinsk, 2008, 127 р.
3. Nesterin V.A., Genin V.S., Romanov R.A., Nesterin A.V., Matyunin A.N. Issledovanie sverkhminiatyurnoi magnitoelektricheskoi mashiny s vozbuzhdeniem ot vysokoenergeticheskikh postoyannykh magnitov v rezhime datchika skorosti [Investigation of a superminiature magnetoelectric machine with excitation from high-energy permanent magnets in the speed sensor mode]. In: Problemy i perspektivy razvitiya energetiki, elektrotekhnike i energoeffektivnosti: materialy II Mezhdunar. nauch.-tekhn. konf. [Proc. of 2^nd Sci. and Techn. Conf. «Problems and prospects of energy, electrical engineering and energy efficiency development»]. Cheboksary, Chuvash University Publ., 2018, рр. 243–248.
4. Nesterin V.A., Genin V.S., Romanov R.A., Tokmakov D.A., Konstruktivnye osobennosti sverkhminiatyurnykh elektricheskikh mashin [Design features of superminiature electric machines]. Vestnik Chuvashskogo universiteta, 2017, no. 3, рр. 115–122.
5. Nesterin V.A., Romanov R.A., Matyunin A.N., Myasnikova T.V. Beskontaktnye vysokotemperaturnye datchiki uglovogo polozheniya na baze sverkhminiatyurnoi magnitoelektricheskoi mashiny [Non-contactless high-temperature angular sensors on the basis of superminiature magneticelectric machine]. Vestnik Chuvashskogo universiteta, 2019, no. 3, рр. 176–184.
6. Romanov R.A. Opredelenie rabochikh tochek postoyannykh magnitov raznykh tipov dlya magnitnoi sistemy sverkhminiatyurnogo ventil’nogo elektrodvigatelya [Determination of working points of permanent magnets of different types for the magnetic system of a superminiature valve motor.]. In: Dinamika nelineinykh diskretnykh elektrotekhnicheskikh i elektronnykh sistem: materialy XIII Vseros. nauch.-tekhn. konf. [Proc. of 13^th Sci. and Techn. Conf. «Dynamics of nonlinear discrete electrical and electronic systems»]. Cheboksary, Chuvash University Publ., 2019, рр. 113–118.
7. Nesterin V.A., Genin V.S., Romanov R.A., Tokmakov D.A. Mathematical simulations of the electromagnetic system of a subminiature magnetoelectric engine. Russian Electrical Engineering, 2017, vol. 88, no. 7, pp. 400–403.
8. Stolting H.-D. von, Hanser C. Handbuch Elektrische Kleinantriebe. München, Verlag, 2011, 464 р.
9. Seegen A. Kleinstmotoren bewegen die «Welt». Antriebs & Schalttechnik, 2015, Ausgabe 6.
10. Schönfeld R., Hofmann W. Elektrische Antriebe und Bewegungssteuerungen. VDE, 2005, 454 р.

Information about the authors

Roman A. Romanov – Assistant Lecturer, Electrical Equipment and Automated Manufacturing Department, Chuvash State University, Russia, Cheboksary (ragnum@mail.ru).

Tatyana V. Myasnikova – Candidate of Pedagogical Sciences, Assistant Professor, Electrical Technologies, Electrical Equipment and Automated Manufacturing Department, Chuvash State University, Russia, Cheboksary (tatyanamyasnikova@yandex.ru).

Alexey N. Matyunin – Candidate of Technical Sciences, Senior Lecturer, Electrical Technologies, Electrical Equipment and Automated Manufacturing Department, Chuvash State University, Russia, Cheboksary (matyunin86@mail.ru).

For citations

Romanov R.A., Myasnikova T.V., Matyunin A.N. INCREASE IN THE ELECTROMAGNETIC MOMENT OF A SUPERMINIATURE ELECTRIC MOTOR EXCITED BY RARE EARTH PERMANENT MAGNETS. Vestnik Chuvashskogo universiteta, 2021, no. 1, pp. 111–121. DOI: 10.47026/1810-1909-2021-1-111-121 (in Russian).

Download the full article