Gec Alsthom Transport Sa

Alcatel

Philippe Carrere

Thierry Meynard

Jean-Paul Lavieville

Olivier Bethoux

Jean-Luc Thomas

Juan Gonzalez

Olivier Tachon

Maurice Fadel

A multilevel converter including, in particular, a voltage source, a current source, and a capacitor for each of its cells, and a controller. The controller evaluates any current difference between an observed current through the current source and a current requested by the current source. The controller also includes ON-time controller for taking into account the current difference, if any, and altering accordingly a duration of the first conduction state of all of the cells in the converter in a direction suitable for reducing the current difference. The controller also maintains all of the floating capacitors at their equilibrium voltage values.

Electronic circuit for converting electrical energy having a corrective,

A multilevel converter including, in particular, a capacitor for each of its cells, and control means comprising means for evaluating the mean voltage across the terminals of each of the capacitors, means for measuring any difference on each of said capacitors between the evaluated mean charge voltage and the nominal mean charge voltage of the capacitor, and additional control means changing the time positions of the converter control signals in a direction such that the measured difference is reduced.

Electrical circuit for converting electrical energy having capacitors

Electronic circuit for converting electrical energy

Electronic circuit for converting electrical energy, and a power supply

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Toulouse, France

Philippe Carrere