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

Archive ouverte : Communication dans un congrès

Lu, Li | Aslan, Bassel | Kobylanski, Luc | Sandulescu, Paul | Meinguet, Fabien | Kestelyn, Xavier | Semail, Eric

Edité par HAL CCSD

International audience. 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.

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