Title:
モータ駆動装置および測定方法
Document Type and Number:
Japanese Patent JP6603295
Kind Code:
B2
Abstract:
A motor driving device includes: a converter unit having a capacitor; a plurality of inverter units having a plurality of semiconductor switching elements and configured to convert a capacitor voltage across the capacitor into an AC voltage to drive a plurality of motors; a second switch configured to connect the negative-side terminal of the capacitor to ground; a first detector configured to detect a ground-referenced voltage; and a second detector configured to detect the capacitor voltage. The motor driving device controls the semiconductor switching elements to establish a measurement state for enabling measuring of the insulation resistance of a measurement target motor, estimates a convergence value of the ground-referenced voltage based on multiple measurements of the ground-referenced voltage detected by the first detector, and then calculates the insulation resistance based on the estimated convergence value and the capacitor voltage.
Inventors:
Tetsuhiro Zhang
Yoichiro Oi
Yoichiro Oi
Application Number:
JP2017227489A
Publication Date:
November 06, 2019
Filing Date:
November 28, 2017
Export Citation:
Assignee:
FANUC Corporation
International Classes:
G01R31/34; H02M7/48; H02P5/46
Domestic Patent References:
| JP2015169479A | ||||
| JP60078359A | ||||
| JP2014081267A | ||||
| JP62063868A | ||||
| JP2017142269A | ||||
| JP2007198995A | ||||
| JP2017173263A |
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Takayuki Chima
Shuji Ouchi
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi
Akira Yamano
Toshiyuki Miyadera
Takayuki Chima
Shuji Ouchi
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi
Akira Yamano