Title:
交流電動機の制御装置
Document Type and Number:
Japanese Patent JP6954150
Kind Code:
B2
Abstract:
In a MG control device, a standard voltage calculation part calculates a d axis standard voltage and a q axis standard voltage in a standard state in which no demagnetization occurs in permanent magnets of a MG. A magnetic flux change amount estimation value calculation part calculates a basic magnetic flux change amount estimation value based on a deviation of a specific value from the q-axis standard voltage. This specific value is obtained by multiplying q axis real voltage with a ratio of the d axis standard voltage and the d axis real voltage. A magnetic flux change amount estimation value correction part adjusts a magnetic flux change amount estimation value by correcting the basic magnetic flux change amount estimation value relatively to a detection threshold value based on characteristic change of the MG in a demagnetization state of the permanent magnets of the MG.
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Inventors:
Takashi Ogawa
Seiki Nishiyama
Mitsuharu Matsuno
Seiki Nishiyama
Mitsuharu Matsuno
Application Number:
JP2018008954A
Publication Date:
October 27, 2021
Filing Date:
January 23, 2018
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02P21/14
Domestic Patent References:
| JP2010268599A | ||||
| JP2012105422A |
Attorney, Agent or Firm:
Masaki Hattori