Title:
ＤＣリンク部のコンデンサの短絡判定部を有するモータ駆動装置
Document Type and Number:
Japanese Patent JP6616437
Kind Code:
B2
Abstract:
A motor drive apparatus includes a converter configured to convert AC power of an AC power supply into DC power and outputs the DC power, a DC link unit including capacitors connected in series with each other, an inverter connected in parallel with the DC link unit, and configured to convert the DC power of the DC link unit into AC power for driving a motor, and outputs the AC power, and a short-circuit judgment unit configured to judge that at least one of the capacitors in the DC link unit has shorted in the case where, when the value of a voltage applied to a positive and negative bipolar terminal of the DC link unit is smaller than a first threshold, the value of an input current flowing from the AC power supply into the DC link unit via the converter is larger than a second threshold.
Inventors:
Yuta Goto
Yasuyuki Matsumoto
Masaya Tateda
Yasuyuki Matsumoto
Masaya Tateda
Application Number:
JP2018019407A
Publication Date:
December 04, 2019
Filing Date:
February 06, 2018
Export Citation:
Assignee:
FANUC Corporation
International Classes:
G01R31/02; G01R31/00; H02M7/48
Domestic Patent References:
| JP2016116432A | ||||
| JP2007116790A | ||||
| JP2007060866A | ||||
| JP7222436A |
Foreign References:
| WO2017137128A1 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Hirose Shigeki
Shinji Mitsuhashi
Hirose Shigeki