Three phase converter fed motor having a shielding device to eliminate capacitive current in stator slots
US6756712B1 · kind B1 · utility
8Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2000 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Sep 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for preventing bearing damage from currents through a three-phase motor is provided, including a shield for winding and copper wire within each stator slot of a motor. The shield includes an electrically conductive layer which is insulated from the winding and from the laminated stator core of the three-phase motor. The conductive layer is grounded or conductively connected to the laminated stator core of the three-phase motor on only that side on which the three-phase current is fed to the winding of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.