H - Electricity – 02 – P
Patent
H - Electricity
02
P
H02P 21/00 (2006.01)
Patent
CA 2295772
A three-phase/two-phase converter (10) detects the two-phase component of a three-phase stator current and performs the .gamma.-.delta. coordinate system transformation of the stator current to derive a .gamma.-axis current and a .delta.-axis current. The .gamma.-axis current and the .delta.-axis current are inputted, along with voltage designating values from a .gamma.-axis current controller (2) and a .delta.-axis current controller (3), to a stator current/induced electromotive force estimation unit (9) in order to determine an estimated value of the stator current in the .gamma.-.delta. coordinate system and an estimated value of the induced electromotive force.
Un convertisseur triphasé/biphasé (10) détecte le composant biphasé d'un courant de stator triphasé et exécute la transformation du système de coordonnées .gamma.-.delta. de ce courant afin de dériver un courant d'axe .gamma. et un courant d'axe .delta.. Ces deux courants sont envoyés, ainsi que des valeurs indicatives de tension provenant d'une commande d'intensité de courant d'axe .gamma. (2) et de courant d'axe .delta. (3) à une unité (9) d'établissement de valeurs estimatives de courant /force électromotrice induite de stator afin de déterminer une valeur estimée du courant de stator dans le système de coordonnées .gamma.-.delta. ainsi qu'une valeur estimée de la force électromotrice induite.
Ide Kozo
Morimoto Shinya
Oguro Ryuichi
Kabushiki Kaisha Yaskawa Denki
Sim & Mcburney
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