Title:
MOTOR DRIVE DEVICE AND METHOD OF CONTROLLING MOTOR DRIVE DEVICE
Document Type and Number:
Japanese Patent JP2017060332
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor drive device including a current detector for detecting DC bus current of an inverter, in which, when a short-circuit fault occurs in a switching element of the inverter, zero-point correction of the current detector can be suppressed from being erroneously performed.SOLUTION: A control section determines a first current detection value detected by a current detector when upper arms of the all phases of an inverter are in an ON-controlled state, determines a second current detection value detected by the current detector when lower arms of the all phases of the inverter are in an ON-controlled state, and sets a correction value for performing off-set correction of an output of the current detector on the basis of at least one of the first current detection value and the second current detection value when the deviation between the first current detection value and the second current detection value is equal to or less than a threshold.SELECTED DRAWING: Figure 4
Inventors:
IIJIMA FUMIYA
KOSEKI TOMONOBU
YATSUGI FUMISHIGE
KOSEKI TOMONOBU
YATSUGI FUMISHIGE
Application Number:
JP2015184345A
Publication Date:
March 23, 2017
Filing Date:
September 17, 2015
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD
International Classes:
H02P6/16; H02P27/06
Domestic Patent References:
| JP2012075307A | 2012-04-12 | |||
| JP2011193584A | 2011-09-29 | |||
| JP2007159349A | 2007-06-21 |
Attorney, Agent or Firm:
Moriaki Ogawa
Haruyuki Nishiyama
Mitsuji Sekiya
Haruyuki Nishiyama
Mitsuji Sekiya