Title:
MAGNETIC POLE POSITION ESTIMATION DEVICE OF AC SYNCHRONOUS MOTOR AND CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2022020905
Kind Code:
A
Abstract:
To provide a magnetic pole position estimation device of an AC synchronous motor and a control device which can estimate a magnetic pole position in short time irrespective of a magnitude of inertia of a motor, reduce travel of a rotor and a movable element of the motor under an estimation operation, and do not damage a load.SOLUTION: In a magnetic pole position estimation device which estimates an actual magnetic pole position of an AC synchronous motor on the basis of travel of a rotor or a movable element when predetermined drawing current is applied to an armature coil of the AC synchronous motor on the basis of a drawing current command to draw a magnetic pole of the rotor or the movable element of the AC synchronous motor, coordinate transformation for feeding back the drawing current is performed by using a control phase angle obtained by calculating a predetermined variable gain to the travel to calculate an electric angle phase offset value to be added to the travel in a normal operation of the AC synchronous motor.SELECTED DRAWING: Figure 1
Inventors:
OMORI HIDEHITO
Application Number:
JP2020124154A
Publication Date:
February 02, 2022
Filing Date:
July 21, 2020
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD
International Classes:
H02P6/16; H02P21/18
Attorney, Agent or Firm:
Yuichi Morita