Slot/pole Combinations Choice for Concentrated Multiphase Machines dedicated to Mild-Hybrid Applications

Bassel Aslan (1) , Eric Semail (1) , Julien Korecki (1) , Jerôme Legranger (2)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 Valeo EEM

This paper presents multiphase permanent magnet machines with concentrated non-overlapped winding as a good candidate for automotive low voltage mild-hybrid applications. These machines often require a trade-off between low speed performances such as high torque density and high speed performances like flux weakening capabilities. This paper describes how to choose a key design parameter to ease this compromise, the slots/poles combination, according to three parameters: winding factor including harmonics factor, rotor losses amount thanks to a comparison factor and radial forces balancing. The comparison criterion are based on both analytical formula and Finite Element Analysis.

Mots clés: finite element analysis; machine windings; permanent magnet machines; automotive low voltage mild-hybrid applications; concentrated nonoverlapped winding; concentrated multiphase machines; flux weakening capabilities; harmonic factor; multiphase permanent magnet machines; radial force balancing; rotor loss; slot-pole combination choice; torque density; winding factor; Eddy currents; Harmonic analysis; Vibrations; Windings

Domaines: Electromagnétisme; Energie électrique

Bassel Aslan, Eric Semail, Julien Korecki, Jerôme Legranger. Slot/pole Combinations Choice for Concentrated Multiphase Machines dedicated to Mild-Hybrid Applications. IECON'11, IEEE International Conference On Industrial Applications of Electronics,, Nov 2011, Australia. pp.3698-3703, ⟨10.1109/IECON.2011.6119910⟩. ⟨hal-00817636⟩