Stator coil T-connection for two-phase step motors
US6597077B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A two-phase step motor with bifilar winding around the stator poles is connected to phases &agr; and &bgr; (90° apart) of a two-phase driver in a manner that maximizes torque at medium speed operation and minimizes vibrations. In particular, the coils that are wound around different groups of stator poles are connected in series. In one set, both coils are connected in a forward sense around the stator, while in the other set, the two coils are connected in opposite senses. All coils are energized in every phase of a pulse cycle. The properties are intermediate between that of convention series and parallel stator coil connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.