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.

Author Biographies

Людмила Яковлевна Беликова, Odessa National Polytechnic University

Ph.D, docent of Electric machines chair.  Odessa national
polytechnic university

Виктор Сергеевич Петрушин, Odessa National Polytechnic University

Sc.D, professor of Electric machines chair.  Odessa national polytechnic university

Владимир Павлович Чайковский, Odessa National Polytechnic University

Ph.D, Electric Cars Department, ONPU

Андрей Миронович Якимец, Odessa National Polytechnic University

Ph.D, head of Electric machines chair.  Odessa national polytechnic university

Published
2019-01-21
How to Cite
Беликова, Л., Петрушин, В., Чайковский, В., & Якимец, А. (2019). SIX-PHASE WINDINGS OF ASYNCHRONOUS ENGINES. Electrotechnic and Computer Systems, (29(105), 40-47. https://doi.org/10.15276/eltecs.29.105.2018.4
Section
Electric machines and semiconductor converters

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