Title:
同期電動機の制御装置
Document Type and Number:
Japanese Patent JP4672236
Kind Code:
B2
Abstract:
A control apparatus includes a current detector which detects a current of a synchronous motor, a coordinate converter which coordinate-converts the current obtained from the current detector into a current on rotational biaxial coordinates (d-q axis) rotated at an angular frequency w, a current controller which outputs a voltage command on the rotational biaxial coordinates (d-q axis) such that a current on the rotational biaxial coordinates (d-q axis) follows a current command on the rotational biaxial coordinates (d-q axis), a coordinate converter which coordinate-converts the voltage command on the rotational biaxial coordinates (d-q axis) obtained from the current controller into three-phase voltage commands, an adaptive observer which calculates the angular frequency w, an estimated current of the synchronous motor, an estimated rotor magnetic flux, and an estimated rotational speed based on the current on the rotational biaxial coordinates (d-q axis) and the voltage command on the rotational biaxial coordinates (d-q axis), and an inverter which applies a voltage to the synchronous motor based on the voltage command. The adaptive observer calculates the angular frequency w such that a q-axis component of the estimated rotor magnetic flux is zero.
Inventors:
Yoshihiko Kanahara
Toshiyuki Kaiya
Toshiyuki Kaiya
Application Number:
JP2002565151A
Publication Date:
April 20, 2011
Filing Date:
April 24, 2001
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02P6/18; H02P1/46; H02P3/18; H02P6/06; H02P6/08; H02P6/17; H02P6/182; H02P6/28; H02P21/00; H02P21/06; H02P21/13; H02P21/14; H02P21/18; H02P21/22; H02P21/24; H02P21/26; H02P23/12; H02P23/14; H02P27/04; H02P27/06
Domestic Patent References:
| JPH01122383A | 1989-05-15 | |||
| JPH08308300A | 1996-11-22 | |||
| JP2000037098A | 2000-02-02 |
Attorney, Agent or Firm:
Hiroaki Sakai