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Fault Tolerant Multiphase Electrical Drives: The Impact of Design

Archive ouverte : Article de revue

Semail, Eric | Kestelyn, Xavier | Locment, Fabrice

Edité par HAL CCSD ; EDP Sciences

La version editeur de cet article est disponible à l'adresse suivante : http://journals.cambridge.org/action//displayFulltext?type=1&fid=8024174&jid=JAP&volumeId=43&issueId=02&aid=8024172&bodyId=&membershipNumber=&societyETOCSession=. International audience. This paper deals with fault tolerant multiphase electrical drives. The quality of the torque of a vector-controlled Permanent Magnet (PM) Synchronous Machine supplied by a multi-leg Voltage Source Inverter (VSI) is examined in normal operation and when one or two phases are open-circuited. It is then deduced that a seven-phase machine is a good compromise allowing high torque-to-volume density and easy control with smooth torque in fault operation. Experimental results confirm the predicted characteristics.

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