Method and system for controlling the turn-on time of a device that includes a magnetic circuit
US9520712B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 15, 2012 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Jun 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a system for controlling the switching time of a device that includes a magnetic circuit and a conductive winding. The method includes acquiring a measurement of the magnetic field generated by the residual flux, by a sensor placed near the magnetic circuit; processing the acquired measurements to infer the residual flux in the magnetic circuit; determining, on the basis of the residual flux, the optimal time for switching on the device. The method also includes switching on a three-phase transformer. The transformer includes a primary conductive winding and a secondary conductive winding surrounded by an enclosure. A magnetic field sensor is on the magnetic circuit and/or on one outer surface of the enclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.