Patents by Inventor Lennart Diestel-Feddersen

Lennart Diestel-Feddersen 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).

  • Turbo generator with exciter having pressure recovery
    Patent number: 8742635
    Abstract: A turbo generator (1), including a stator and a rotor (2), has a rotating bell type exciter (3) connected to one end of the rotor (2) and the exciter (3) being equipped with at least one cooler (7). An axial duct (11) with a guide (12) is provided between a cylindrical housing (13) and the outer circumference of the bell type exciter (3). Thus, drawbacks of the prior art are mitigated and the efficiency of the bell type exciter is increased by recovering the dynamic energy of the cooling fluid flow.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: June 3, 2014
    Assignee: Alstom Technology Ltd.
    Inventors: Michel Verrier, Olivier Perros, Lennart Diestel-Feddersen
  • Flux screen for generators
    Patent number: 8022591
    Abstract: A flux screen is provided for shielding a generator stator core from the magnetic field generated by end windings of the stator, wherein the flux screen comprises a frontside to be at least indirectly facing the end windings of the generator and a backside to be at least indirectly facing the stator core of the generator, and wherein the backside is provided with channels and/or grooves and/or pits.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: September 20, 2011
    Assignee: Alstom Technology Ltd.
    Inventors: Pascal Chay, Michael Jean-Marie Berlamont, Janusz Bialik, Johann Haldemann, Lennart Diestel-Feddersen
  • Gas-cooled generator
    Patent number: 7592722
    Abstract: A gas-cooled generator has a rotor rotatable about an axis, a stator surrounding the rotor concentrically and a rotating exciter connected to the rotor. The stator, rotor and exciter are arranged along the axis on a common base frame. A first cooler configured to cool the rotor and stator and second cooler configured to cool the exciter are connected to one another for the exchange of cooling gas via the base frame. At least one tube running in the base frame provides the connection between the first and second coolers.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: September 22, 2009
    Assignee: Alstom Technology Ltd
    Inventors: Michel Bresson, Dominique Chadouteau, Lennart Diestel-Feddersen, Alberto Izquierdo, René Meylan
  • FLUX SCREEN FOR GENERATORS
    Publication number: 20090184594
    Abstract: A flux screen is provided for shielding a generator stator core from the magnetic field generated by end windings of the stator, wherein the flux screen comprises a frontside to be at least indirectly facing the end windings of the generator and a backside to be at least indirectly facing the stator core of the generator, and wherein the backside is provided with channels and/or grooves and/or pits.
    Type: Application
    Filed: January 20, 2009
    Publication date: July 23, 2009
    Applicant: ALSTOM Technology Ltd
    Inventors: Pascal Chay, Michael Jean-Marie Berlamont, Janusz Bialik, Johann Haldemann, Lennart Diestel-Feddersen
  • Turbo Generator With Exciter Having Pressure Recovery
    Publication number: 20080231125
    Abstract: A turbo generator (1), including a stator and a rotor (2), has a rotating bell type exciter (3) connected to one end of the rotor (2) and the exciter (3) being equipped with at least one cooler (7). An axial duct (11) with a guide (12) is provided between a cylindrical housing (13) and the outer circumference of the bell type exciter (3). Thus, drawbacks of the prior art are mitigated and the efficiency of the bell type exciter is increased by recovering the dynamic energy of the cooling fluid flow.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 25, 2008
    Inventors: Michel Verrier, Olivier Perros, Lennart Diestel-Feddersen
  • Dynamo electric machine with a brushless exciter
    Publication number: 20060290214
    Abstract: The invention relates to a dynamo electric machine with a brushless exciter which comprises an exciter rotor driven by the rotor of the dynamo electric machine, and an exciter stator interacting with the exciter rotor. The design of the machine with respect to cooling is facilitated by cooling the exciter with a gaseous cooling medium, particularly air, by means of an independent cooling circuit, and by providing a separate fan for circulating the gaseous cooling medium within the cooling circuit of the exciter.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 28, 2006
    Applicant: ALSTOM Technology Ltd
    Inventors: Lennart Diestel-Feddersen, Alberto Izquierdo
  • Gas-cooled generator
    Publication number: 20060197391
    Abstract: A gas-cooled generator has a rotor rotatable about an axis, a stator surrounding the rotor concentrically and a rotating exciter connected to the rotor. The stator, rotor and exciter are arranged along the axis on a common base frame. A first cooler configured to cool the rotor and stator and second cooler configured to cool the exciter are connected to one another for the exchange of cooling gas via the base frame. At least one tube running in the base frame provides the connection between the first and second coolers.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 7, 2006
    Applicant: ALSTOM Technology Ltd
    Inventors: Michel Bresson, Dominique Chadouteau, Lennart Diestel-Feddersen, Alberto Izquierdo, Rene Meylan