Magnetically shielded three phase rotary transformer having three magnetic cores
US9424978B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2013 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | May 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F38/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A three-phase transformer including a primary portion and a secondary portion, the primary portion including a first body made of ferromagnetic material and primary coils, the secondary portion including a second body made of ferromagnetic material and secondary coils, the first body defining a first annular slot of axis A and a second annular slot of axis A, the primary coils including a first toroidal coil of axis A in the first slot, a second toroidal coil of axis A in the second slot, and one or more third toroidal coils connected in series, the third coils being wound around one of the legs, and passing via slots in the leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.