Alstom

Sorin Dinculescu

Emmanuel Dutarde

Jose Saiz

Fabrice Breit

Thierry Lebey

Jos&eacute; Saiz

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.

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rue Saint Antoine du T., France

Sorin Dinculescu