Methods and systems for detecting a rotor position and rotor speed of an alternating current electrical machine

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United States of America Patent

PATENT NO 11394327
APP PUB NO 20210336572A1
SERIAL NO

17232893

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for determining rotor characteristic of an alternating current (AC) electrical machine includes obtaining a reference voltage signal, one or more phase currents, and rotor data. The method includes determining orthogonal components of an extended back electromotive force (BEMF) model of the AC electrical machine based on the reference voltage signal, the one or more phase current characteristics, and the rotor data. The method includes determining a product of the orthogonal components of the extended BEMF model. The method includes determining a squared-magnitude of the orthogonal components of the extended BEMF mode. The method includes determining the rotor characteristic of the AC electrical machine based on the product of the orthogonal components and the squared-magnitude of the orthogonal components.

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Patent Owner(s)

Patent OwnerAddress
BORGWARNER INC3850 HAMLIN ROAD AUBURN HILLS MI 48326

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dong, Jia Xiu Hamilton, CA 1 0
Emadi, Ali Hamilton, CA 46 1163
Fang, Gaoliang Hamilton, CA 1 0
Nalakath, Shamsuddeen Hamilton, CA 2 0
Sun, Yingguang Kitchener, CA 3 7
Wiseman, Jason Kitchener, CA 4 1
Xiao, Dianxun Hamilton, CA 1 0

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