Title:
CONTROL DEVICE FOR PERMANENT MAGNET MOTOR
Document Type and Number:
WIPO Patent Application WO/2014/167678
Kind Code:
A1
Abstract:
A control device for a permanent magnet motor having a PI current controller which respectively executes proportional and integral control of a d-axis current and a q-axis current which are the two components in a rotating dq-axis coordinate system, the control device comprising: a rotating coordinate transformer (1) which carries out rotating coordinate transformation at a prescribed angle for a d-axis voltage command output from the PI current controller and for a q-axis voltage command output from the PI current controller and outputs the transformed commands as a d-axis voltage correction command and a q-axis voltage correction command; an absolute value calculator (13) for calculating the absolute value of the d-axis voltage correction command; an absolute value calculator (23) for calculating the absolute value of the q-axis voltage correction command; a subtracter (14) for calculating a d-axis voltage saturation amount on the basis of the absolute value of the d-axis voltage correction command and a d-axis voltage rotation limiter value that was acquired by carrying out a rotating coordinate transformation of the d-axis voltage limiter value at the prescribed angle; and a subtracter (24) for calculating a q-axis voltage saturation amount on the basis of the absolute value of the q-axis voltage correction command and a q-axis voltage rotation limiter value that was acquired by carrying out a rotating coordinate transformation of the q-axis voltage limiter value at the prescribed angle.
Inventors:
SO GYOKETSU (JP)
HARAKAWA MASAYA (JP)
HAISHI ATSUO (JP)
TAKEI HIROTO (JP)
TERASHIMA SATORU (JP)
IMANAKA AKIRA (JP)
HARAKAWA MASAYA (JP)
HAISHI ATSUO (JP)
TAKEI HIROTO (JP)
TERASHIMA SATORU (JP)
IMANAKA AKIRA (JP)
Application Number:
PCT/JP2013/060857
Publication Date:
October 16, 2014
Filing Date:
April 10, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P21/00; H02P27/04
Foreign References:
| JP2013055820A | 2013-03-21 | |||
| JP2013055788A | 2013-03-21 | |||
| JP2013017308A | 2013-01-24 | |||
| JP2011229252A | 2011-11-10 | |||
| JP2011004515A | 2011-01-06 | |||
| JP2008017660A | 2008-01-24 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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