Induction device
US8198967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2011 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Jun 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F3/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction device to be used in association with a high voltage electric transmission systems having at least one winding, at least one core frame, and at least one magnetic core leg arranged in the core frame. The core frame includes a plurality of core gaps including a plurality of spacers, and a plurality of core segments of a magnetic material. The core segments are being separated by at least one of the core gaps, and the winding is causing electromagnetic attraction forces to act in the core gaps. The induction device further includes at least one piezoelectric element arranged in one of the core gaps, and a control unit connected to the piezoelectric element. The control unit is arranged to provide an electrical signal for inducing vibrations of the piezoelectric element which counteract the electromagnetic attraction forces acting in the core gaps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.