Non-liquid immersed transformers with improved coil cooling
US11355273B2 · kind B2 · utility
0Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2018 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Mar 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/327
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-liquid immersed transformer including a magnetic core having a winding axis and at least two coil windings wound around the magnetic core along the winding axis. One or more cooling tubes made of dielectric material are arranged inside at least one of the coil windings to cool down the coil winding using dielectric fluid flowing through the dielectric cooling tubes. Each cooling tube is wound continuously forming one or more complete loops around the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.