Demagnetization analysis of an open-end windings 5-phase PMSM under transistor short-circuit fault

Tiago José dos Santos Moraes (1) , Eric Semail (1) , Ngac-Ky Nguyen (1)

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

For an open-end windings integrated Permanent Magnet Synchronous Machine, the demagnetization of the permanent magnets is analyzed when a transistor is short-circuited and no specific control strategy is adopted. Depending on the temperature, the high currents due to the inverter fault may locally demagnetized the permanent magnets leading to an accelerated aging of the machine and torque loss. A co-simulation, using a Finite Element software for the machine coupled with an average modeling of the transistor, gives interesting local prediction of the machine behavior in healthy and degraded mode.

Mots clés: PMSM; Demagnetization; Electric Vehicles; Transistor Short-Circuit; Inverter Fault; Integrated Motor Drives

Domaines: Electronique

Tiago José dos Santos Moraes, Eric Semail, Ngac-Ky Nguyen. Demagnetization analysis of an open-end windings 5-phase PMSM under transistor short-circuit fault. 45th Annual Conference of the IEEE Industrial Electronics Society (IECON 2019), Oct 2019, Lisbonne, Portugal. pp.6206-6211, ⟨10.1109/IECON.2019.8927205⟩. ⟨hal-02498280⟩