Patent ID: 9300234
Filing Date: 2016-03-29
CPC Classification: H02P

Claim Text:
1. A rotary electric machine controller, comprising: a superimposer for superimposing a high-frequency signal on one of a voltage and a current of a rotary electric machine having saliency; an estimator for calculating an estimate value of a magnetic-pole position of a rotor included in the rotary electric machine based on a high-frequency component appearing in the other one of the voltage and the current of the rotary electric machine; a retainer for retaining correction amount relating values which are different from each other for at least two points of the magnetic-pole position of the rotor; and a corrector for acquiring one of the correction amount relating values retained by the retainer corresponding to the estimate value of the magnetic-pole position of the rotor and correcting the estimate value of the magnetic-pole position of the rotor based on the acquired one of the correction amount relating values.