Patent ID: 11901847
Assignee: HITACHI ASTEMO, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor control device comprising:
a power converter that converts DC into AC and supplies the AC to a three-phase brushless motor; and
a controller that performs an arithmetic operation for voltage command values of d and q axes of the three-phase brushless motor through feedback control including integral control performed on current deviations between current detection values and current command values of the d and q axes and controls the power converter on the basis of the voltage command values, wherein
the controller limits an integrated value in the integral control within a predetermined range, and
the controller performs an arithmetic operation for the predetermined range in accordance with the current deviation, the integrated value, an electric motor constant of the three-phase brushless motor, an angular speed detection value of the three-phase brushless motor, control response angular frequencies of the d and q axes, and voltage upper limit values and voltage lower limit values of the d and q axes set on the basis of a power source voltage of the power converter.