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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.

Inventors:
HARA Takafumi (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
AJIMA Toshiyuki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
YANAGISAWA Hiroaki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
OTA Hiroyuki (2520, Takaba, Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
Application Number:
JP2017/017344
Publication Date:
December 07, 2017
Filing Date:
May 08, 2017
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
H02M7/48; B60T13/74; B62D6/00; H02P27/06
Domestic Patent References:
WO2000014866A12000-03-16
Foreign References:
JP2014128087A2014-07-07
JP2008160915A2008-07-10
JP2010284017A2010-12-16
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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