MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE IN WHICH SAME IS MOUNTED

WIPO Patent Application WO/2017/006717

A1

The problem addressed by the present invention is to provide a motor control device in which high-output drive is achieved, the motor control device maintaining steering feel with good responsiveness in relation to the operation amount of the steering wheel as in a power steering device while keeping input current at or below a prescribed value in response to vehicular power source management. This motor control device is characterized by being provided with an inverter (2) for converting DC input current (IO) from a DC voltage power source (3) into AC current and outputting the same on the basis of the rotor phase of the motor, the maximum field-weakening current (Id) being calculated by a field-weakening current command calculation unit (20) within a range such that the input current (IO) to the inverter (2) does not exceed a prescribed maximum value while torque current (Iq) is maintained, and the maximum field-weakening current (Id) being conducted.

AOYAGI SHIGEHISA (JP)
AJIMA TOSHIYUKI (JP)
KASHIMA MASAKI (JP)
OOTA HIROYUKI (JP)

PCT/JP2016/067645

January 12, 2017

June 14, 2016

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

H02P21/22

JP2014017924A	2014-01-30
JP2008104266A	2008-05-01
JP2010064544A	2010-03-25
JPH07186479A	1995-07-25
JP2000329040A	2000-11-28
US20130187446A1	2013-07-25

SHIGEO MORIMOTO ET AL.: "Wide Speed Control of Interior Permanent Magnet Synchronous Motor", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN . D (A PUBLICATION OF INDUSTRY APPLICATIONS SOCIETY, vol. 114, no. 6, 1994, pages 668 - 673, XP055344890

POLAIRE I.P.C. (JP)

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