Title:
モータ磁極位置検出装置,モータ制御装置,モータ駆動システム及び洗濯機
Document Type and Number:
Japanese Patent JP4751435
Kind Code:
B2
Abstract:
A motor magnetic pole position detecting device includes a detection current command generation unit generating a detection AC current command, a current detection section detecting a current flowing into the motor, a coordinate conversion unit vector-converting the current detected by the current detection section into an excitation component and a torque component both represented by a d-q orthogonal coordinate system based on a phase angle obtained at any rotational frequency, a current control unit delivering a voltage command to current-control the motor based on the detection current command and the current converted by the coordinate conversion unit, an inductance calculation unit calculating motor inductance based on the voltage command and the current converted by the coordinate conversion unit, and a magnetic pole position detection section calculating a frequency and phase of the inductance calculated by the inductance calculation unit, converting the inductance phase into a motor magnetic pole position.
Inventors:
Maekawa Sari
Application Number:
JP2008262793A
Publication Date:
August 17, 2011
Filing Date:
October 09, 2008
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
H02P6/18; H02P6/06; H02P6/08; H02P6/17; H02P6/182; H02P6/185; H02P6/28
Domestic Patent References:
| JP11123000A | ||||
| JP2004112898A | ||||
| JP2000102300A | ||||
| JP2004312864A | ||||
| JP2001136779A |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office