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

Claim 6:
7. A motor control method comprising, by a controller that performs an arithmetic operation for voltage command values of d and q axes of a 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, on the basis of the voltage command values, a power converter that converts DC into AC and supplies the AC to the three-phase brushless motor;
limiting an integrated value in the integral control within a predetermined range when the arithmetic operation for the voltage command values is performed, wherein
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.