Absolute angle estimation apparatus for a sensorless...

H - Electricity – 02 – P

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H02P 25/08 (2006.01) H02P 1/16 (2006.01) H02P 6/18 (2006.01) H02P 9/40 (2006.01)

Patent

CA 2260112

An apparatus for estimating rotor position of a rotating machine having an even number of phase windings selects first and second phase position estimates developed in response to pulses applied to phase windings having associated phase profiles that are displaced at other than 180 electrical degrees and determines a rotor position estimate from the first and second phase position estimates.

Cette invention concerne un appareil permettant d'estimer la position du rotor d'une machine rotative qui possède un nombre pair d'enroulements de phase. Cet appareil va tout d'abord sélectionner une première et une seconde estimée de position de phase. Ces estimées sont obtenues en réponse à des impulsions appliquées aux enroulements de phase, ces derniers possédant des profils de phase associés qui sont déplacés selon une valeur différente de 180 degrés électriques. L'appareil va ensuite calculer une estimée de la position du rotor à partir de la première et de la seconde estimée de position de phase.

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