Title:
多相電動機の制御装置
Document Type and Number:
Japanese Patent JP4884356
Kind Code:
B2
Abstract:
A controller (1) of a multi-phase electric motor (7) includes drive means (6), including a pair of an upper arm switching element and a lower arm switching element, for driving the multi-phase electric motor (7); single current detection means (8) for detecting a current value of the multi-phase electric motor (7); PWM signal generation means (2) for generating plural PWM signals of each phase within one control period based on the current value detected by the current detection means (8) and a carrier signal; and phase movement means (5) for moving the PWM signal of a predetermined phase generated by the PWM signal generation means (2) by gradually changing a movement amount of the phase in one control period, and outputting the resultant PWM signal to the drive means (6).
Inventors:
Hamasaki Mitsumitsu
Shinichi Kuratani
Takenobu Nakamura
Shinichi Kuratani
Takenobu Nakamura
Application Number:
JP2007304091A
Publication Date:
February 29, 2012
Filing Date:
November 26, 2007
Export Citation:
Assignee:
OMRON Automotive Electronics Co., Ltd.
International Classes:
H02P6/08; H02P6/06; H02P6/15; H02P6/16; H02P6/28
Domestic Patent References:
| JP2002291284A |
Foreign References:
| US6049474 |
Attorney, Agent or Firm:
Hideyuki Okumura