Title:
DRIVING DEVICE FOR PERMANENT MAGNET SYNCHRONOUS MOTOR, DRIVING METHOD AND ELECTRIC VEHICLE
Document Type and Number:
Japanese Patent JP2021002949
Kind Code:
A
Abstract:
To estimate the magnet magnetic flux of a permanent magnet synchronous motor with high accuracy.SOLUTION: A driving device 1S for a permanent magnet synchronous motor comprises a power converter 60 that drives a permanent magnet synchronous motor 90, a current controller 30 that generates a voltage command value so that the current flowing through the permanent magnet synchronous motor 90 matches a current command value, and a control device 1 that controls the power converter 60 based on the voltage command value. The control device 1 includes a magnet magnetic flux estimation unit 100 that estimates the magnet magnetic flux of the permanent magnet synchronous motor 90 based on the voltage command value generated by the current controller 30 at each of different times.SELECTED DRAWING: Figure 1
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Inventors:
SHIROTA HIROYUKI
KUNIHIRO NAOKI
ISHIKAWA KATSUMI
KUNIHIRO NAOKI
ISHIKAWA KATSUMI
Application Number:
JP2019115926A
Publication Date:
January 07, 2021
Filing Date:
June 21, 2019
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02P21/16; H02P21/06
Domestic Patent References:
| JP2005051892A | 2005-02-24 | |||
| JP2010041839A | 2010-02-18 | |||
| JP2004159400A | 2004-06-03 | |||
| JP2015095975A | 2015-05-18 | |||
| JP2001145399A | 2001-05-25 | |||
| JP2015104174A | 2015-06-04 |
Foreign References:
| WO2014057575A1 | 2014-04-17 |
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office