Converteam Technology Ltd.

Ge Energy Power Conversion Technology Gmbh

Abdollah Mirzaian

Jean-Charles Mercier

Matthieu Urbain

Jean-Michel Claude

Ramdane Lateb

Olivier Dirand

Pascal Manuelle

A power supply system is provided. The power supply system includes a converter converting a direct input current into a polyphase alternating output current including a plurality M of phases. The converter includes two input terminals, is arranged at the input of the element and delivers the polyphase alternating current to element. The power supply system also includes a controller controlling the converter, a storage bank including at least one storage capacitor between the input terminals, a device protecting the element from over-voltages or over-currents of the polyphase alternating current, between the converter and element, including a plurality of switching arms between the respective phases of the polyphase alternating current. Each switching arm includes two thyristors connected head-to-tail and in parallel. The controller applies a negative voltage to the terminals of at least one thyristor during a period greater than a predetermined turn-off time of the thyristor.

Power supply system for an element, among a rotor and a stator of an electric machine, and method for controlling such system

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Valdoie, France

Abdollah Mirzaian