CONTROL DEVICE FOR PERMANENT MAGNET TYPE ROTATING ELECTRICAL MACHINE

In order to reduce deviation of correction amount when calculating a magnetic pole position correction amount of a permanent magnet type rotating electrical machine, and perform magnetic pole position correction with high accuracy, in state where the permanent magnet type rotating electrical machine...

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Bibliographic Details
Main Authors HARADA, Shingo, WATANABE, Masutaka, ENOKI, Keiichi, NISHIJIMA, Yoshimasa, OTSUKA, Kazuhiko, MURATA, Yasukazu
Format Patent
LanguageEnglish
Published 07.05.2020
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:In order to reduce deviation of correction amount when calculating a magnetic pole position correction amount of a permanent magnet type rotating electrical machine, and perform magnetic pole position correction with high accuracy, in state where the permanent magnet type rotating electrical machine is rotated, a d-axis current command value and a q-axis current command value in dg vector control are kept substantially zero, an actual d-axis voltage and an actual q-axis voltage are calculated from a midpoint potential detected from a midpoint potential detection unit, a magnetic pole position correction amount is calculated based on a predetermined arithmetic expression from the actual d-axis voltage and the actual q-axis voltage, and magnetic pole position origin correction is performed based on the magnetic pole position correction amount.
Bibliography:Application Number: US201716609489