MAGNETOELECTRIC VALVE MOTORS WITH TOOTHED MULTI-POLE WINDINGS BASED ON 6DVM 300

DOI: 10.47026/1810-1909-2022-3-21-34

УДК 621.313

ББК 31.261

Aleksandr A. AFANASYEV

Key words

tooth coils, Fourier series, magnetomotive force (MMF) of windings and magnets, specific magnetic conductivity, magnetic inductions, electromotive force (EMF) of the winding, electromagnetic moment

Abstract

The paper considers valve motors with toothed windings with pole numbers 2, 4, 6, 8, the main dimensions of which correspond to the 6DVM 300 valve motor manufactured by JSC “Cheboksary electrical apparatus plant”. This approach allows us to evaluate the effect of the number of stator teeth on the electromagnetic moment and its harmonic composition. The three adjacent coils of the toothed windings in question belong to three different phases. The paper analyzes the MMF of the windings and magnets of the rotor. The distribution of magnetic induction in the gap, the EMF of the stator winding and the electromagnetic moment are found based on the method of the specific magnetic conductivity of the gap. It is shown that the MMF curve of the stator winding consists of two multipolar rectangles of unequal height and width. Due to the non-sinusoidal distribution of magnetic field sources and the jagged inhomogeneity of the air gap, the curves of the phase EMF of the stator winding are also significantly non-sinusoidal. It is found that with an increase in the number of poles (from 2 to 8 poles) of the stator winding, the maximum induction in the air gap decreases from level 1 to 0.75 Tl, the average value of the electromagnetic moment increases from 120 to 160 Nm, the amplitude of the phase EMF remains unchanged, and the maximum (height of the rectangle) of the MMF of the stator winding is reduced from 2000 to 500 A.

References

1. Alekseeva M.M. Mashinnye generatory povyshennoi chastoty [High Frequency Machine Generators]. Leningrad, Energiya Publ., 1967, 344 p.
2. Afanas’ev A.A. Metod sopryazheniya konformnykh otobrazhenii v zadachakh elektromekhaniki [Method of conjugating conformal mappings in electromechanics problems]. Cheboksary, Chuvash University Publ., 2011, 390 p.
3. Vol’dek A.I. Elektricheskie mashiny [Electric Machines]. Leningrad, Energiya Publ., 1974, 840 p.
4. Kaluzhskii D.L. Elektricheskie mashiny s diskretno-raspredelennymi obmotkami: avtoref. dis. … d-ra tekhn. nauk [Electric machines with discretely distributed windings. Abstract of Doct. Diss.]. Ekaterinburg, 1999, 40 p.
5. San Yu., Sen’kov A.P. Sravnenie massogabaritnykh pokazatelei ventil’nykh dvigatelei s raspredelennoi i zubtsovoi obmotkami statora [Comparison of mass and size indicators of valve motors with distributed and toothed stator windings]. Vestnik gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S.O. Makarova, 2016, iss. 3(87), pp. 174–180.
6. Sen’kov A.P., Lavrenov S.N., Makin P.V., San Yu. Osobennosti magnitnogo polya ventil’nykh elektrodvigatelei s zubtsovym shagom obmotki statora [Features of the magnetic field of valve electric motors with a toothed step of the stator winding]. Vestnik Astrakhanskogo gosudarstvennogo tekhnicheskogo universiteta. Ser. Morskaya tekhnika i tekhnologiya, 2016, no. 4, pp. 79–88.
7. Shevchenko A.F. Mnogopolyusnye sinkhronnye mashiny s drobnymi q < 1 zubtsovymi obmotkami s vozbuzhdeniem ot postoyannykh magnitov [Multipolar synchronous machines with fractional q < 1 tooth windings with excitation from permanent magnets]. Elektrotekhnika, 2007, no. 9, pp. 3–8.
8. Islam R., Husain I. Permanent-magnet synchronous motor magnet designs with skewing for torque ripple and cogging torque reduction. IEEE Transactions on industry application, 2009, vol. 15, no. 1, pp. 152–160.
9. Jabbari A., Shakeri M. Pole shape optimization of permanent magnet synchronous motors using the reduced basis technique. Iranian Journal & Electronic Engineering, 2010, vol. 6, no. 1, pp. 48–55.

Information about the author

Aleksandr A. Afanasyev – Doctor of Technical Sciences, Professor, Department of Automation and Control in Technical Systems, Chuvash State University, Russia, Cheboksary (afan39@mail.ru).

For citations

Afanasyev A.A. MAGNETOELECTRIC VALVE MOTORS WITH TOOTHED MULTI-POLE WINDINGS BASED ON 6DVM 300. Vestnik Chuvashskogo universiteta, 2022, no. 3, pp. 21–34. DOI: 10.47026/1810-1909-2022-3-21-34 (in Russian).

Download the full article