Rotor position estimation for permanent magnet synchronous electrical machines with salient poles

Estimation de la position du rotor d'une machine éléctrique synchrone avec pôles saillants

Jérémy Malaizé (1) , Laurent Praly (2)

1 IFPEN - IFP Energies nouvelles
2 CAS - Centre Automatique et Systèmes

We extend the one-sided gradient observer of the rotor electrical position of [8] to deal with permanent magnet synchronous electrical machines with salient poles. This is done by an appropriate choice of the output function and involves a Cartesian description of the image of the unit circle by a degree 2 polynomial function and an extension of a convex function. Global convergence of the observer is established under the assumption of limited saliency or small currents.

Domaines: Automatique / Robotique

Jérémy Malaizé, Laurent Praly. Rotor position estimation for permanent magnet synchronous electrical machines with salient poles. 2012. ⟨hal-02568844v1⟩