Centre National De La Recherche Scientifique

Electricite De France

Institut Polytechnique De Grenoble

Bruno Caillault

Jean-Louis Coulomb

Olivier Nicolas Chadebec

Didier Cavallera

Francois-Xavier Zgainski

Olivier Chadebec

François-Xavier Zgainski

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.

Method and system for controlling the turn-on time of a device that includes a magnetic circuit

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Herbeys, France

Bruno Caillault