Control device for AC rotary machine and control method for AC rotary machine

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United States of America Patent

PATENT NO 11799405
SERIAL NO

17432943

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Abstract

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In sensorless control for a rotary machine, when variations in inductances for U, V, W phases due to manufacturing error are great, imbalance occurs among detected currents for the respective phases. Thus, estimation error of a magnetic pole position of a rotor increases, so that positioning accuracy is reduced. Correction filters for imparting gains in accordance with rotary machine constants for the respective phases are provided to control means or magnetic pole position calculation means, thereby correcting the imbalance occurring among the detected currents for the respective phases.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI ELECTRIC CORPORATIONTOKYO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hachiya, Yosuke Tokyo, JP 23 91
Ito, Masato Tokyo, JP 148 1964
Kawahara, Kunihiro Tokyo, JP 6 4
Maruyama, Akihiro Tokyo, JP 52 397

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