Roger Brushless

[Marthe Bernskoetter]

Thepermanent magnet (PM) motors are applied widely in the fields of aerospace, electric ship propulsion, electric vehicles and numerical control machines numerical control machine numerical control machine because of their high performance. Conventionally, the PM brushless motors are three-phase, but it has limit in high power applications. Therefore, multiphase motors become more and more popular because of their several attractive features. This paper focuses on the dual three-phase PM brushless motor. Based on the selections of coil emf vectors and their related winding factors and mechanical arrangements for 12-slot 10-pole dual three-phase PM motor, an alternate winding connection is proposed for reducing the coupling between the two sets of three-phase windings. Furthermore, the electromagnetic performances of the dual three-phase PM brushless ac motor with different connections are analyzed and compared to those of conventional three-phase motor.

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