Computation of Optimal Current References for Flux-weakening of Multi-Phase Synchronous Machines

Li Lu (1) , Bassel Aslan (1) , Luc Kobylanski (2) , Paul Sandulescu (1) , Fabien Meinguet (1) , Xavier Kestelyn (1) , Eric Semail (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 Valeo Engine Electrical Equipment

Multi-phase synchronous machines are more and more used in specific applications where high power density, low bus voltage, wide speed range and fault-tolerant capabilities are required. Due to the high number of degrees of freedom, multi-phase machines are difficult to optimally operate in flux-weakening zones. This paper proposes a technique to numerically compute optimal current references that can be used for feed-forward flux-weakening techniques in order to exploit the maximum machine performances for given DC bus voltage and current limits. The proposed technique is applied to a five-phase permanent magnet synchronous machine specifically developed for an automotive application.

Mots clés: Multi-Phase Synchronous Machines; Flux-weakening; Optimal Current References

Domaines: Energie électrique

Li Lu, Bassel Aslan, Luc Kobylanski, Paul Sandulescu, Fabien Meinguet, et al.. Computation of Optimal Current References for Flux-weakening of Multi-Phase Synchronous Machines. IECON 2012 (38th Annual Conference of the IEEE Industrial Electronics Society), Oct 2012, Canada. pp.3610 - 3615, ⟨10.1109/IECON.2012.6389318⟩. ⟨hal-00785576⟩