Title:
MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018078741
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor control device that prevents q-axis actual current from decreasing even in a case where d-axis actual current is caused to flow.SOLUTION: A motor control device 4 comprises: an inverter 34 that converts power of a power source 101 and supplies it to a motor 40; a d-axis current command value calculating section 22; and a q-axis actual current estimated value calculating section 44. A d-axis current command value Idis set to d-axis current command assumed value Idand, in correspondence with the d-axis current command assumed value, the value of a current assumed to flow along the q axis is set to a q-axis actual current estimated value Iq. The q-axis actual current estimated value calculating section creates a plurality of d-axis current command assumed values composed of the d-axis current command value Id, a value increased from the d-axis current command value by ΔId, or a value decreased from the d-axis current command value by ΔId, and calculates a plurality of corresponding q-axis actual current estimated values. The d-axis current command value calculating section compares q-axis actual current estimated values and selects, as a d-axis current command value, the d-axis current command assumed value corresponding to the q-axis actual current estimated value whose absolute value is maximum.SELECTED DRAWING: Figure 1
Inventors:
OTAKE HIROYASU
NAKAJIMA NOBUYORI
NAKAJIMA NOBUYORI
Application Number:
JP2016219540A
Publication Date:
May 17, 2018
Filing Date:
November 10, 2016
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02P21/12
Attorney, Agent or Firm:
Masaki Hattori