Patent ID: 8174220
Filing Date: 2012-05-08
Classification: B60L,H02P,Y02T

Abstract:
1. An apparatus for controlling a permanent magnet rotary electric machine comprising: a magnetic pole position detection portion configured to detect positions of magnetic poles of a rotor of the permanent magnet rotary electric machine having a permanent magnet and an armature in the rotor and a stator, respectively, a correction quantity determination portion configured to obtain a magnet pole position correction quantity for correcting positions of magnet poles to be detected by the magnetic pole position detection portion, and a current control portion configured to control an armature current flowing through the armature while manipulating a phase of the armature voltage to be applied to the armature according to the magnetic pole positions obtained by correcting the magnetic pole positions detected by the magnetic pole position detection portion using the magnetic pole position correction quantity obtained by the correction quantity determination portion, wherein after the current control portion is controlled in a state that the rotor rotates at a constant speed, to supply a predetermined current to the armature, a dq vector control process is performed by determining a predetermined temporarily set value as the magnetic pole position correction quantity while a d-axis current command value and a q-axis current command value in the dq vector control process performed on a dq coordinate system that has a d-axis extending in a magnetic field direction of the permanent magnet of the rotor and a q-axis extending in a direction perpendicular to the d-axis, and the magnetic pole position correction quantity is obtained based on a predetermined operation expression using the d-axis voltage command value and the q-axis voltage command value as variable numbers which are obtained when the dq vector control process is performed.