Japan, July 14 -- HITACHI ASTEMO LTD has got intellectual property rights for 'MOTOR CONTROL DEVICE AND ELECTRIC MOTOR VEHICLE.' Other related details are as follows:
Application Number: JP,2023-040958
Category (FI): H02P21/02
Stage: PROBLEM TO BE SOLVED: To appropriately control a waken magnetic flux current under a condition of low torque/high temperature in which the waken magnetic flux current flows more excessively than in a normal state to suppress an efficiency deterioration.SOLUTION: A motor control device comprises a current command value generation part that generates a current command value on the basis of a torque command value and a rotational speed of a motor, and controls driving of the motor by the current command value. The current command value generation part comprises: a first d-shaft current command value generation part 81 that generates a first d-shaft current command value on the basis of the torque command value and the rotational speed of the motor; an MT d-shaft current command value generation part 82 that generates an MT d-shaft current command value as a d-shaft current command value on MTPA on the basis of the torque command value; and a second d-shaft current command value generation part 84 that generates a second d-shaft current command value where the first d-shaft current command value is brought close to the MT d-shaft current command value in the case where an inter-terminal voltage of the motor is a predetermined value or less. The current value generation part generates a third d-shaft current command value obtained by adding the second d-shaft current command value to the first d-shaft current command value.SELECTED DRAWING: Figure 2 (Grant)
Filing Date: March 15, 2023
Publication Date: Sept. 30, 2024
The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100
Disclaimer: Curated by HT Syndication.
