Title:
MOTOR CONTROL DEVICE AND ELECTRIC VEHICLE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/034259
Kind Code:
A1
Abstract:
Disclosed is a motor control device capable of improving the accuracy and reliability of magnetic flux estimation. This motor control device comprises: a voltage command creation unit (41) that generates, in accordance with the speed command or the torque command of a motor, the rotor of which has a permanent magnet, a voltage command for controlling the output voltage of a power conversion device; a dead time compensation unit (42) that performs dead time compensation for the voltage command; and a magnetic flux estimation unit (50) that estimates the magnetic flux of the permanent magnet. The magnetic flux estimation unit estimates the magnetic flux of the permanent magnet on the basis of the voltage command and the voltage drops occurring in the motor and the power conversion device and occurring between the motor and the power conversion device. The voltage drops include: a first voltage drop component due to a resistance component; a second voltage drop component caused by the dead time compensation; and a third voltage drop component obtained by removing the first voltage drop component and the second voltage drop component from the voltage drops.
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Inventors:
SUZUKI TAKAHIRO (JP)
OHARA SHUNSUKE (JP)
MITSUI TOSHISADA (JP)
MATSUI HIROKAZU (JP)
OHARA SHUNSUKE (JP)
MITSUI TOSHISADA (JP)
MATSUI HIROKAZU (JP)
Application Number:
PCT/JP2023/022480
Publication Date:
February 15, 2024
Filing Date:
June 16, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
B60L9/18; H02P21/14; B60L50/60; H02P25/024
Foreign References:
| JP2019129573A | 2019-08-01 | |||
| JP2006166664A | 2006-06-22 | |||
| US20200021226A1 | 2020-01-16 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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