Japan, July 14 -- HITACHI ASTEMO LTD has got intellectual property rights for 'MOTOR CONTROLLER AND ELECTRIC VEHICLE.' Other related details are as follows:
Application Number: JP,2023-041029
Category (FI): H02P21/22
Stage: PROBLEM TO BE SOLVED: To address a problem in which a current command value deviates from a current detection value of a motor, and operation of control through use of a current command value becomes unstable.SOLUTION: Provided is a motor controller including: a current command value generation unit that generates a current command value based on a motor torque command value and a rotational speed of a motor; a torque command value calculation unit that calculates a torque command value based on the generated current command value and calculates a torque of the motor based on a detection value of a current flowing in the motor; a voltage phase control unit that controls a voltage phase angle such that the torque of the motor matches the torque command value; and a power conversion unit that based on the voltage phase angle and rotation angle information on the motor, converts direct-current power into alternating-current power and outputs the converted alternating-current power to the motor. The current command value generation unit calculates a d-axis current command value and a q-axis current command value constituting the current command value such that a current command value of either axis of the d-axis current command value or the q-axis current command value approaches a current detection value of that axis.SELECTED DRAWING: Figure 1 (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.
