Title:
交流電動機の制御装置
Document Type and Number:
Japanese Patent JP5598767
Kind Code:
B2
Abstract:
A motor control circuit calculates, based on a sensed current of a sensor phase sensed by a current sensor, an estimated current of the other phase and calculates a d-axis and a q-axis estimated currents based on the sensed current of the sensor phase and the estimated current of the other phase. The motor control circuit further calculates a d-axis and a q-axis command voltages based on the estimated currents thereby to control power supply to the AC motor. When the sensed current of the sensor phase is 0 [A], the command voltages are fixed and the estimated current is interpolated. Thus, variations of the command voltages caused by an error in the estimated current are reduced and a rapid change in the estimated current is reduced.
Inventors:
Takashi Omata
Takeshi Ito
Kako Kanbun era
Takeshi Ito
Kako Kanbun era
Application Number:
JP2012035959A
Publication Date:
October 01, 2014
Filing Date:
February 22, 2012
Export Citation:
Assignee:
Denso, Inc.
International Classes:
H02P27/04; H02P21/00; H02P21/14; H02P23/14
Attorney, Agent or Firm:
Muneo Kako