Motor having circuit for decreasing standby current

A technology of electric motors and circuits, applied in the field of electric motors, can solve the problems of large-scale and complicated current cut-off circuits, and achieve the effect of compact and simple structure and miniaturization
CN102158153AActive Publication Date: 2011-08-17NIDEC TECHNO MOTOR CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NIDEC TECHNO MOTOR CORP
Publication Date
2011-08-17

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Abstract

The invention provides a motor having a circuit for decreasing standby current. The circuit (13) for decreasing standby current is arranged in a control circuit (5) of a drive inverter circuit (4) and a current supply path between control power supplies providing current to the control circuit (5). When driving of a motor body (2) is stopped, the current supply path is cut off via the circuit (13) for decreasing standby current. The circuit (13) for decreasing standby current, the inverter circuit (4), the control circuit (5) and the motor body (2) is arranged in a motor (1).
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Description

technical field

[0001] The present invention belongs to the technical field related to an electric motor with an inverter circuit and its control circuit. Background technique

[0002] Conventionally, as a drive device for a brushless DC motor, a drive device including an inverter circuit for supplying a drive current to the DC motor and a control circuit for controlling the inverter circuit is known.

[0003] In such a drive device, various techniques have been proposed so far in order to reduce the standby current flowing from the control power supply to the control circuit during the stop of the motor.

[0004] For example, in the motor drive device disclosed in Japanese Patent Application Laid-Open No. 11-311436, a current interruption circuit having a mechanical on-off switch is provided in the current supply path for the control circuit, and when the motor stops, the MCU (microcomputer ) to disconnect the on-off switch.

[0005] [Patent Document 1] Japanese Patent Ap...

Claims

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