Title:
MOTOR DRIVE DEVICE HAVING RESIDUAL CHARGE CONSUMPTION CONTROLLER
Document Type and Number:
Japanese Patent JP2018186625
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To achieve a motor drive device for quickly removing residual charges of a DC link capacitor when being separated from an AC power supply at low cost.SOLUTION: A motor drive device 1 includes: a forward converter 11 for converting AC input from an AC power supply 3 to DC to output it to a DC link; a DC link capacitor 12 provided in the DC link; a plurality of inverse converters 13-n that are provided for motors 2-n, respectively, converts DC in the DC link to AC to output it to the corresponding motors 2-n; a temperature detector 14 for detecting temperature of the respective motors 2-n; an opening/closing unit 15 for opening/closing a cable way between the AC power supply 3 and the forward converter 11; and a residual charge consumption controller 16 for performing control to output a reactive current to at least one of the plurality of inverse converters 13-n according to information on temperature of the motor detected by the temperature detector 14 when the opening/closing unit 15 open-circuits the cable way and input of AC from the AC power supply 3 to the forward converter 11 is suspended.SELECTED DRAWING: Figure 1
Inventors:
YOSHIDA TOMOKAZU
Application Number:
JP2017086306A
Publication Date:
November 22, 2018
Filing Date:
April 25, 2017
Export Citation:
Assignee:
FANUC LTD
International Classes:
H02P5/46; H02M7/48; H02M7/493; H02P3/18
Domestic Patent References:
| JP2011072171A | 2011-04-07 | |||
| JP2005022321A | 2005-01-27 | |||
| JP2013198256A | 2013-09-30 | |||
| JP2016127782A | 2016-07-11 | |||
| JP2009201194A | 2009-09-03 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura
Jun Tsuruta
Tomohiro Minamiyama
Akira Kawai
Kenichi Nakamura