Patents by Inventor Olivier Tachon

Olivier Tachon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electronic circuit for converting electrical energy having a corrective, collective control means
    Patent number: 5969960
    Abstract: 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.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: October 19, 1999
    Assignee: Alcatel
    Inventors: Olivier Tachon, Maurice Fadel, Thierry Meynard, Philippe Carrere