Scientific and Technical Journal

ELECTROTECHNIC AND COMPUTER SYSTEMS

ISSN Print 2221-3937
ISSN Online 2221-3805
SIX-PHASE WINDINGS OF ASYNCHRONOUS ENGINES
Abstract:

One of ways of improvement of operational characteristics of adjustable-speed induction motors is the increase in number of phases of a stator winding from three to six. A current consumed by one phase of a stator winding six-phase induction motor, approximately twice less than a consumed phase current of its three-phase analogue. Thanks to it, in drives of average and big capacity there is a possibility to reduce current load on an inverter phase at simultaneous increase in their quantity. Was considered that six-phase winding can be received from three-phase by replacement of six-phase zones A, C', B, A', C, B' on six phases A, B, C, D, E, F with 60º phase zone. In this case six-phase winding turns out two-layer. Here the analysis of possible schemes six-phase windings in 36 and 24 slots of stator with number of poles 2р=4 and 2р=2 is resulted. Schemes of six-phase windings of different designs for adjustable-speed induction motors are offered. Was considered that six-phase windings can be only two-layer. However, performance of single-layered windings is possible. Application of single-layered windings simplifies manufacturing techniques of six-phase engines. Schemes of single-layered six-phase windings among grooves статора Z1=36 with number of poles 2p=4 are resulted at change of alternation of phases, and also among grooves Z1=24 with number of poles 2p=2 at change of a numerical number and alternation of phases of a winding. Application six-phase induction motors will lead to considerable decrease in vibration and magnetic noise in comparison with similar indicators in three-phase the induction motors that promotes decrease in pulsations of the torque and speed on a shaft of the motor and increase of its reliability. Having considered the presented schemes of six-phase windings, it is possible to draw a conclusion that in spite of the fact that six-phase windings cannot be designed with 30º phase zone, all the same there is a possibility of their designing in single-layered execution.

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References

1. Petrushin, V. S., Bielikova, L. J., Enoktaev, R. N, Plotkin, JU. R. (2016). Сomparison characteristics multiphase regulated the asynchronous engines. [Sravnenie jekspluatacionnyh harakteristik mnogofaznyh reguliruemyh asinhronnyh dvigatelej,]. The electrical engineer and electromecanics №1, 2016, p.38‒41.

2. V.S. Petrushin, J. R. Plotkin, R. N. Enoktaev, O. I. Shestakov (2015). Working out of the six-phase adjustable asynchronous engine [Razrabotka shestifaznogo reguliruemogo asinhronnogo dvigatelja]. Scientifically-practical magazine «Elektrotehnichnye and computer systems» №20 (96), 2015, p. 35‒41.

3. V. S. Petrushin, JU. R. Plotkin, R. N. Enoktaev (2016). Modelling of adjustable electric drives with two-block rectifiers and multiphase asynchronous engines [Modelirovanie reguliruemyh jelektroprivodov s dvuhblochnymi vyprjamiteljami i mnogofaznymi asinhronnymi dvigateljami]. Scientifically-practical magazine «Elektrotehnichnye and computer systems» №22 (98), 2016, p.43‒49.

Published:
Last download:
14 Nov 2019

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