Title:
浮遊容量を推定するモータ駆動装置
Document Type and Number:
Japanese Patent JP6629893
Kind Code:
B2
Abstract:
A motor drive apparatus includes an inverter configured to convert an input DC voltage into an AC voltage for driving a motor, by ON/OFF driving of an internal power element, and outputs the AC voltage, a high-frequency current detection unit configured to detect a high-frequency current from a current flowing through a motor power line upon application of the AC voltage output from the inverter to the motor via the motor power line, and a stray capacitance estimation unit configured to estimate a stray capacitance occurring in the motor power line and the motor, based on the high-frequency current detected by the high-frequency current detection unit.
Inventors:
Matsuda Ryo
Taku Sasaki
Taku Sasaki
Application Number:
JP2018018392A
Publication Date:
January 15, 2020
Filing Date:
February 05, 2018
Export Citation:
Assignee:
FANUC Corporation
International Classes:
G01R27/26; G01R31/34; H02M7/48; H02P27/08; H02P29/024
Domestic Patent References:
| JP2008099507A | ||||
| JP2004184275A | ||||
| JP2017184361A | ||||
| JP2004104898A | ||||
| JP2004317164A | ||||
| JP2007221851A | ||||
| JP2008099505A | ||||
| JP5249157A |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Hirose Shigeki
Shinji Mitsuhashi
Hirose Shigeki