Vectorial Approach Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation

Fabrice Locment (1) , Eric Semail (1) , Xavier Kestelyn (1)

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

This paper deals with easy-to-implement control strategies when a seven-phase axial flux permanent magnet machine supplied by a seven-leg voltage source inverter is in fault operation mode. Using a vectorial multimachine description, a seven-phase machine presenting a heightened ability to be controlled with one or two open-circuited phases has been designed. The machine is first presented, and experimental results are provided when one or two phases are open circuited. Based on a vectorial approach, new current references are calculated to avoid high-torque ripples.

Mots clés: fault diagnosis; machine vector control; permanent magnet machines; fault operation; permanent magnet machine; seven-leg voltage source inverter; seven-phase axial flux machine; Fault tolerance; multiphase synchronous machine; reliability; torque ripple

Domaines: Automatique / Robotique; Energie électrique

Fabrice Locment, Eric Semail, Xavier Kestelyn. Vectorial Approach Based Control of a Seven-Phase Axial Flux Machine Designed for Fault Operation. IEEE Transactions on Industrial Electronics, 2008, 55 (10), pp.3682-3691. ⟨10.1109/TIE.2008.925313⟩. ⟨hal-00817669⟩