Patents by Inventor Pierre Brodeau

Pierre Brodeau 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).

  • Drive circuit for an air bearing motor
    Patent number: 9571014
    Abstract: The invention relates to a drive circuit for an electric motor having an aerodynamic bearing of the motor shaft, wherein the drive circuit comprises at least one storage means for storing electrical energy by which the electric motor can be fed with electrical energy on a failure of the supply voltage or DC-link voltage to obtain a minimum speed of the motor shaft required for the air support at least at times.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: February 14, 2017
    Assignee: LIEBHERR-ELEKTRONIK GMBH
    Inventors: Nejat Mahdavi, Ralf Cremer, Pierre Brodeau
  • DRIVE CIRCUIT FOR AN AIR BEARING MOTOR
    Publication number: 20150130384
    Abstract: The invention relates to a drive circuit for an electric motor having an aerodynamic support of the motor shaft, wherein the drive circuit comprises at least one storage means for storing electrical energy by which the electric motor can be fed with electrical energy on a failure of the supply voltage or intermediate circuit voltage to obtain a minimum speed of the motor shaft required for the air support at least at times.
    Type: Application
    Filed: September 2, 2014
    Publication date: May 14, 2015
    Inventors: Nejat Mahdavi, Ralf Cremer, Pierre Brodeau
  • Device with a polyphase electrical machine, and related electrical machine
    Patent number: 8564238
    Abstract: The invention relates to a device having a polyphase electrical machine, wherein a plurality of inverters (36, 37, 38), which are controlled by an interlaced control modulated by pulse width to an identical cutoff frequency, provide, on the phase outputs thereof, an alternating voltage signal having an identical fundamental frequency, amplitude and phase to an electrical machine (2) that comprises at least two separate so-called star windings (33, 34, 35), each star winding being supplied by a related inverter, each phase output of which is connected to a phase circuit that includes the phase winding of the star winding, the device being characterized in that each phase circuit for a star winding has a negative mutual inductance with the homologous phase circuit of another star winding.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: October 22, 2013
    Assignees: Liebherr-Aerospace Toulouse SAS, Institut National Polytechnique de Toulouse, Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Thierry Meynard, Anne-Marie Lienhardt, Vincent Devanneaux, Pierre Brodeau, Regis Ruelland, Jean-Pierre Carayon
  • DEVICE WITH A POLYPHASE ELECTRICAL MACHINE, AND RELATED ELECTRICAL MACHINE
    Publication number: 20110241591
    Abstract: The invention relates to a device having a polyphase electrical machine, wherein a plurality of inverters (36, 37, 38), which are controlled by an interlaced control modulated by pulse width to an identical cutoff frequency, provide, on the phase outputs thereof, an alternating voltage signal having an identical fundamental frequency, amplitude and phase to an electrical machine (2) that comprises at least two separate so-called star windings (33, 34, 35), each star winding being supplied by a related inverter, each phase output of which is connected to a phase circuit that includes the phase winding of the star winding, the device being characterized in that each phase circuit for a star winding has a negative mutual inductance with the homologous phase circuit of another star winding.
    Type: Application
    Filed: December 9, 2009
    Publication date: October 6, 2011
    Applicants: LIEBHERR-AEROSPACE TOULOUSE SAS, INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE
    Inventors: Thierry Meynrd, Anne-Marie Lienhardt, Vincent Devanneaux, Pierre Brodeau, Regis Ruelland, Jean-Pierre Carayon