Multiphase step motor
US7633191B2 · kind B2 · utility
0Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Mar 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The multiphase step motor is capable of reducing vibrations of a rotor and torque ripples in spite of switching current flowing through stator coils. Stator units are divided into 2n (n is an integer one or more) per one phase and coaxially layered, and the stator units of the same phase are plane-symmetrically layered with respect to a plane perpendicular to an axial center of a stator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.