Three-phase permanent magnet cascade claw type stepping motor
US6121712A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnet type stepping motor which has (1) a stator with three-phase stator windings, and 6m pieces of stator main pole arranged side by side, where m is an integer and .gtoreq.1, the stator windings of one phase are wound around every two stator main poles among the 6m pieces of the stator main pole, wherein when the stator windings of one phase are excited with a direct current, m pieces of N pole and M pieces of S pole are formed alternately on the 6m pieces of stator main pole, and (2) a rotor of a cylindrical permanent magnet magnetized in the circumferential direction to form Z/2 pieces of N pole and Z/2 pieces of S pole alternately, where Z is the number of rotor poles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.