Title:
交流電動機の制御装置及び交流電動機システム
Document Type and Number:
Japanese Patent JP4241218
Kind Code:
B2
Abstract:
The apparatus has an inverter (2) for applying an arbitrary AC power to an AC motor and a controller for sending a control signal to the inverter. A ripple current generator (11) supplies a ripple current to the motor. A magnetic pole position estimator observes two current values of the ripple current for both positive and negative sides of the ripple current to estimate a magnetic pole position of the motor.
Inventors:
Daigo Kaneko
Yoshinao Iwaji
Kiyoshi Sakamoto
Endo Tsunehiro
Tomofumi Okubo
Yoshinao Iwaji
Kiyoshi Sakamoto
Endo Tsunehiro
Tomofumi Okubo
Application Number:
JP2003183714A
Publication Date:
March 18, 2009
Filing Date:
June 27, 2003
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H02P6/18; H02P6/06; H02P6/08; H02P6/182; H02P21/00; H02P21/14; H02P27/04; H02P27/08
Domestic Patent References:
| JP2002078392A | ||||
| JP2002078391A |
Attorney, Agent or Firm:
Manabu Inoue