Title:
MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING DEVICE EQUIPPED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2018/230542
Kind Code:
A1
Abstract:
[Problem] To provide a vector control-type motor control device that compensates for inverter dead time without requiring a tuning operation, improves current waveform distortion and current control responsiveness, and suppresses noise, vibrations and torque ripples. [Solution] Disclosed is a vector control-type motor control device that calculates dq-axes control assist command values, calculates dq-axes current command values from the control assist command values, converts the dq-axes current command values into three-phase duty command values, and drives and controls a three-phase brushless motor with a PWM-control inverter, wherein: three-phase dead time reference compensation values are calculated on the basis of a motor rotation angle having been phase-corrected by using the dq-axes current command values; and inverter dead time compensation is performed by adding, to dq-axes voltage command values or three-phase voltage command values, dead time compensation values obtained by processing the three-phase dead time reference compensation values with a gain, a sign, and the like.
Inventors:
TAKASE HIROAKI (JP)
MINAKI RYO (JP)
SAWADA HIDEKI (JP)
SUGAWARA TAKAYOSHI (JP)
MINAKI RYO (JP)
SAWADA HIDEKI (JP)
SUGAWARA TAKAYOSHI (JP)
Application Number:
PCT/JP2018/022338
Publication Date:
December 20, 2018
Filing Date:
June 12, 2018
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
H02P21/06; B62D5/04; B62D6/00; H02P27/08; B62D101/00; B62D119/00
Domestic Patent References:
WO2012169311A1 | 2012-12-13 | |||
WO2017033508A1 | 2017-03-02 | |||
WO2017098840A1 | 2017-06-15 |
Foreign References:
JP2007110827A | 2007-04-26 | |||
JP2009165279A | 2009-07-23 | |||
JP4681453B2 | 2011-05-11 | |||
JP2015171251A | 2015-09-28 | |||
JP2017070066A | 2017-04-06 |
Other References:
See also references of EP 3614558A4
Attorney, Agent or Firm:
AGATA Yuzo (JP)
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