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Title:
MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2014195353
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain a motor control device capable of reducing switching shock due to a difference of an internal state of each controller.SOLUTION: A motor control device comprises: a speed controller for generating a current command value according to a speed difference that is a difference between an angular speed command and an angular speed; a q-axis current controller for generating a q-axis voltage command value according to a q-axis current difference that is a difference between a q-axis current command value and a q-axis current detection value; a d-axis current controller for generating a d-axis voltage command value according to a d-axis current difference that is a difference between a d-axis current command value and a d-axis current detection value; and a mode control part for determining whether or not a normal control mode should be switched to a weak magnetic flux control mode corresponding to saturation of a voltage applied to a motor on the basis of an induced voltage according to the q-axis current detection value and the d-axis current detection value, and determining whether or not the weak magnetic flux control mode should be switched to the normal control mode on the basis of the d-axis current detection value.

Inventors:
OHARA YOSHIYUKI
Application Number:
JP2013070499
Publication Date:
October 09, 2014
Filing Date:
March 28, 2013
Export Citation:
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Assignee:
FUJITSU GENERAL LTD
International Classes:
H02P27/04; H02P21/00; H02P21/05; H02P21/18; H02P21/22; H02P21/24; H02P23/04; H02P25/026; H02P27/08
Domestic Patent References:
JPH08275599A1996-10-18
JP2011067010A2011-03-31
JP2006204054A2006-08-03
JP2012050259A2012-03-08
JP2013046453A2013-03-04
JPH10191700A1998-07-21
JPH08275599A1996-10-18
JP2011067010A2011-03-31
Foreign References:
CN101399516A2009-04-01
CN101399516A2009-04-01
Attorney, Agent or Firm:
Hiroaki Sakai



 
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