Motor control device and electric vehicle

The motor control device stabilizes AC motors at high speeds by compensating for dead time through phase advancement and damping ratio control, effectively suppressing vibrations.

JP7833330B2Active Publication Date: 2026-03-19ASTEMO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-04-06
Publication Date
2026-03-19

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Abstract

To provide a motor control device that can stably drive an AC motor even under the influence of a dead time, and an electric vehicle equipped with an AC motor controlled by the motor control device.SOLUTION: A motor control device controls a power converter (2) to which an AC motor (1) is connected, and includes a voltage vector calculation unit (18) that generates a voltage command for a power converter such that the AC amount of the AC motor matches a command value, and a damping ratio control unit (26) that calculates a vibration component of a d-axis component or a vibration component of a q-axis component at a point in time when the phase of the AC amount advances on the basis of the vibration component of the dq-axis component of the AC amount, and generates a correction amount for correcting the voltage command on the basis of the calculated vibration component of the d-axis component or the calculated vibration component of the q-axis component.SELECTED DRAWING: Figure 1
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Citation Information

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