Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation

Ngac Ky Nguyen (1) , Damien Flieller (2) , Xavier Kestelyn (1) , Eric Semail (1)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 GREEN - Groupe de Recherche en Electrotechnique et Electronique de Nancy

An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions. Based on the existing solutions [i]opt1 (without zero sequence of current constraint) and [i]opt2 (with zero sequence constraint), this new expression of currents [i]opt3 is obtained by means of a geometrical representation and can be applied to open-circuit, defect of current regulation, current saturation and machine phase short-circuit fault. Simulation results are presented to validate the proposed approach.

Mots clés: Saturation; Multiphase PMSM; Optimal currents; Fault tolerance; Open-circuit; Short-circuit; Torque pulsation

Domaines: Energie électrique

Ngac Ky Nguyen, Damien Flieller, Xavier Kestelyn, Eric Semail. Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation. The 40th Annual Conference of the IEEE Industrial Electronics Society (IECON 2014), Oct 2014, Dallas, TX, United States. ⟨10.1109/IECON.2014.7048968⟩. ⟨hal-01059050⟩