Title:
CONTROL APPARATUS FOR SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JP2017005900
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a control apparatus for a synchronous motor capable of avoiding demagnetization without the need to excessively limiting torque.SOLUTION: A control apparatus for the synchronous motor comprises: a current command generation part which generates a d-phase current command and a q-phase current command; a current detection part which detects a d-phase current and a q-phase current; a short-circuit device which short-circuits the synchronous motor for applying dynamic brake to the synchronous motor; and a short-circuit control part which controls the short-circuit device. The current command generation part controls the q-phase current command so as to decrease the q-phase current after a dynamic brake signal is received. The short-circuit control part controls the short-circuit device so as to short-circuit the synchronous motor after the dynamic brake signal is received and after the lapse of a predetermined time from the control of the q-phase current command by the current command generation part.SELECTED DRAWING: Figure 4
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Inventors:
SENOO TATSUYA
Application Number:
JP2015118620A
Publication Date:
January 05, 2017
Filing Date:
June 11, 2015
Export Citation:
Assignee:
FANUC LTD
International Classes:
H02P21/00; H02P3/22; H02P27/04
Domestic Patent References:
| JP2014054064A | 2014-03-20 | |||
| JP2015023649A | 2015-02-02 | |||
| JP2013188000A | 2013-09-19 | |||
| JP2002084780A | 2002-03-22 | |||
| JP2006280141A | 2006-10-12 |
Foreign References:
| WO2014091602A1 | 2014-06-19 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Kenichi Nakamura
Jun Tsuruta
Tomohiro Minamiyama
Kenichi Nakamura