Patent ID: 9419555
Filing Date: 2016-08-16
CPC Classification: H02P

Claim Text:
1. A synchronous machine control apparatus for correcting a first rotor position error that is a difference between a rotor position of a synchronous machine and a rotor position detected by a position detection unit for detecting the rotor position of the synchronous machine, the synchronous machine control apparatus comprising: a current control device for performing control in such a way that respective current command values and respective current detection values in a generation direction of an armature interlinked magnetic flux and in a direction perpendicular to the generation direction of the armature interlinked magnetic flux coincide with each other; a magnetic flux calculation device for estimating the armature interlinked magnetic flux and calculating a phase of the estimated armature interlinked magnetic flux, based on an armature current detection value of the synchronous machine and an armature voltage command value therefor; and a rotor position error calculation device for calculating a second rotor position error based on the phase of the estimated armature interlinked magnetic flux calculated by the magnetic flux calculation device and correcting the first rotor position error that is the difference between the rotor position of the synchronous machine and the rotor position detected by the position detection unit based on the second rotor position error calculated by the rotor position error calculation device.