Alstom

Alstom Transport Technologies

Alstom Transport Sa

Fabrice Breit

Emmanuel Dutarde

Jose Saiz

Thierry Lebey

Christophe Beuille

Henri Schneider

Jos&eacute; Saiz

Sorin Dinculescu

Chritophe Beuille

A matrix converter for transforming electrical energy between at least one voltage source, in particular a power supply network, and at least one current source, in particular a load, said converter including a matrix of switches connecting said voltage sources to said current sources, wherein each of said switches has two terminals which are interconnected via a photoconductive layer of diamond, each switch being controlled by means of a light source irradiating the layer of diamond interposed between the two terminals of the switch.

Matrix converter for transforming electrical energy

This power switching cell comprises: Each intermediate bond () as well as the faces of the components linked to this intermediate bond are entirely incorporated inside said substrate, and the faces not linked to an intermediate bond () of the components situated at the ends of said chain () are disposed in such a way as to be separated from one another by way of the dielectric material forming said substrate (). This substrate is formed of a stack of parallel sheets () of dielectric material, and each of the components () following in said chain is incorporated in the thickness of a different sheet.

Module for high voltage power for converting a base of IGBT components

A method of testing a power module including a control gate, an emitter, a collector, at least one power component on a dielectric substrate and a diode connected in antiparallel with the power component measures partial discharges occurring between the emitter and the collector when an alternating current voltage source superimposed on a direct current voltage source is connected between the collector and the emitter of the power module. The voltage V received by the power module between the collector and the emitter verifies at all times the condition V >0 so that the diode never conducts. The power component is maintained in a turned off state during the test by a direct current voltage source connected between the control gate and the emitter.

Method and a device for testing a power module

A matrix converter for transforming electrical energy between at least one voltage source, in particular a power supply network, and at least one current source, in particular a load, said converter including a matrix of switches connecting said voltage sources to said current sources, wherein each of said switches has two terminals disposed in respective distinct parallel planes and a photoconductive diamond substrate interposed between said two terminals of the switch, each switch being controlled by means of a light source irradiating the diamond substrate interposed between the two terminals.

An electronic power module including at least one semi-conductor power component disposed on an electrically insulating substrate, wherein said semi-conductor power component includes a face in contact with said substrate, which face is metallized in part and is covered in part in a diamond layer, said metallized portion being in contact with a conductor track provided on the surface of the substrate, and said diamond-covered portion being in register with an opening formed in the substrate, said substrate including a face remote from the semi-conductor component which is cooled by a liquid coolant, said liquid flowing into said opening and over the surface of the diamond-covered portion.

Growing community of inventors

Campan, France

Fabrice Breit