Method of controlling alignment of a rotator of SRM and SRM driving circuit for realizing the same

Abstract

Disclosed is a method of controlling alignment of a rotor of an SRM with respect to a stator, the SRM including a stator having a plurality of diametrically opposed stator salient magnetic pole pairs around each which each of a plurality of phase coils is wound, and a rotor disposed about a shaft within the stator and having a plurality of diametrically opposed rotor salient pole pairs, comprising the steps of: (a) applying a voltage pulse having an identical magnitude to each phase coil surrounding the plurality of pairs of stator salient magnetic poles in a plurality of respective motor phases of a stator of the SRM upon the initial starting of the SRM; (b) detecting current flowing into the each phase coil in the plurality of respective motor phases in accordance to the application of the voltage pulse; (c) comparing the respective magnitude values of the detected current in the respective motor phases with each other; and (d) bringing rotor salient pole pair of the rotor into alignment with a corresponding pair of stator salient poles of a motor phase with a phase coil into which current of the lowest level flows with the result of the comparison.

Dependencies are inferred from the claim text.