JP2755667B

A motor-driving circuit (11) is used for driving a motor (12) which is of a type including a rotor whose rotating shaft has a permanent magnet used for generating magnetic fluxes, and an armature having three-phase windings wound around an iron core to form Y-connection windings. The motor-driving c...

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Bibliographic Details
Main Authors SUEMATSU MUTSUMI, ATSUMI KOICHIRO, KASHIMA NORYASU, OOTANI KAZUMI
Format Patent
LanguageEnglish
Published 20.05.1998
Edition6
Subjects
BASIC ELECTRIC ELEMENTS
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
GENERATION
SEMICONDUCTOR DEVICES
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Summary:A motor-driving circuit (11) is used for driving a motor (12) which is of a type including a rotor whose rotating shaft has a permanent magnet used for generating magnetic fluxes, and an armature having three-phase windings wound around an iron core to form Y-connection windings. The motor-driving circuit (11) includes a circuit (5) for short-circuiting two of the three leads extending from the Y-connection windings, a rotational position detector for detecting a rotational position of the motor, and a control circuit (17) for causing an exciting current to flow between the short-circuited leads and the remaining lead, in such a manner that the rotational position detected by the rotational position-detecting means is moved to a designated rotational position which is external input and is within a narrow angular range.
Bibliography:Application Number: JP19890074521