Electric motor having auxiliary winding arrangement for electrostatic shielding
US6011338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Jul 10, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing driven windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is also equipped with an auxiliary winding arrangement to reduce capacitive coupling between the stator and rotor during operation. The auxiliary winding arrangement comprises grounded auxiliary windings located in the winding slots and the inside surface of the coilheads to interpose the driven windings and the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.