Title:
MOTOR CONTROL DEVICE AND ELECTRIC SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/208730
Kind Code:
A1
Abstract:
Provided is a motor control device that controls a motor appropriately by accurately detecting, without detection error, a current offset amount included in a detection value of a direct-current bus current. This motor control device comprises: a power converter; a three-phase motor driven by the power converter; and a control means that detects a motor current flowing through the three-phase motor on the basis of a detection value of a direct-current bus current, creates a command voltage on the basis of the motor current, and controls the power converter by using the command voltage. The control means calculates a current phase for when the direct-current bus current does not include a current offset amount, and estimates the current offset amount included in the detection value of the direct-current bus current on the basis of the current phase.
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Inventors:
HARA TAKAFUMI (JP)
AJIMA TOSHIYUKI (JP)
YANAGISAWA HIROAKI (JP)
OTA HIROYUKI (JP)
AJIMA TOSHIYUKI (JP)
YANAGISAWA HIROAKI (JP)
OTA HIROYUKI (JP)
Application Number:
PCT/JP2017/017344
Publication Date:
December 07, 2017
Filing Date:
May 08, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02M7/48; B60T13/74; B62D6/00; H02P27/06
Domestic Patent References:
| WO2000014866A1 | 2000-03-16 |
Foreign References:
| JP2014128087A | 2014-07-07 | |||
| JP2008160915A | 2008-07-10 | |||
| JP2010284017A | 2010-12-16 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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