Reduced-Order Model of Rotor Cage in Multiphase Induction Machines: Application on the Prediction of Torque Pulsations

Abdelhak Mekahlia (1, 2) , Eric Semail (1) , Franck Scuiller (3) , Hussein Zahr (2)

1 L2EP - Laboratoire d’Électrotechnique et d’Électronique de Puissance - ULR 2697
2 VeDeCom - VEhicule DEcarboné et COmmuniquant et sa Mobilité
3 IRENAV - Institut de Recherche de l'Ecole Navale

For three-phase induction machines supplied by sinusoidal current, it is usual to model the n-bar squirrel-cage by an equivalent two-phase circuit. For a multiphase induction machine which can be supplied with different harmonics of current, the reduced-order model of the rotor must be more carefully chosen in order to predict the pulsations of torque. The proposed analysis allows to avoid a wrong design with non-sinusoidal magnetomotive forces. An analytical approach is proposed and confirmed by Finite-Element modelling at first for a three-phase induction machine and secondly for a five-phase induction machine.

Mots clés: General Engineering; Applied Mathematics; Computational Mathematics; multiphase induction machine; reduced order; rotor cage; torque pulsations

Domaines: Energie électrique

Abdelhak Mekahlia, Eric Semail, Franck Scuiller, Hussein Zahr. Reduced-Order Model of Rotor Cage in Multiphase Induction Machines: Application on the Prediction of Torque Pulsations. Mathematical and computational applications, 2020, 25 (1), pp.11. ⟨10.3390/mca25010011⟩. ⟨hal-03030786⟩