An analysis of the beneﬁts of signal injection for low-speed sensorless control of induction motors

Pascal Combes; François Malrait; Philippe Martin; Pierre Rouchon

An analysis of the beneﬁts of signal injection for low-speed sensorless control of induction motors

Pascal Combes ¹ François Malrait ² Philippe Martin ¹ Pierre Rouchon ^{1, 3}

2 Schneider Toshiba Inverter Europe [Pacy-sur-Eure]

3 QUANTIC - QUANTum Information Circuits

ENS Paris - École normale supérieure - Paris, UPMC - Université Pierre et Marie Curie - Paris 6, MINES ParisTech - École nationale supérieure des mines de Paris, Inria de Paris

Abstract : We analyze why low-speed sensorless control of the IM is intrinsically difficult, and what is gained by signal injection. The explanation relies on the control-theoretic concept of observability applied to a general model of the saturated IM. We show that the IM is not observable when the stator speed is zero in the absence of signal injection, but that observability is restored thanks to signal injection and magnetic saturation. The analysis also reveals that existing sensorless algorithms based on signal injection may perform poorly for some IMs under particular operating conditions. The approach is illustrated by simulations and experimental data.

Type de document :

Communication dans un congrès

Domaine :

Sciences de l'ingénieur [physics] / Automatique / Robotique

Liste complète des métadonnées

https://hal-mines-paristech.archives-ouvertes.fr/hal-01486948
Contributeur : François Chaplais <>
Soumis le : vendredi 10 mars 2017 - 16:10:22
Dernière modification le : mardi 14 mai 2019 - 10:13:38

An analysis of the beneﬁts of signal injection for low-speed sensorless control of induction motors

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An analysis of the beneﬁts of signal injection for low-speed sensorless control of induction motors

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