Method of controlling alignment of a rotator of SRM and SRM driving circuit for realizing the same
US6586897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P1/163
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.