Patents by Inventor Friedhelm Pohlmann

Friedhelm Pohlmann 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).

  • Patent number: 11940499
    Abstract: A method for the non-destructive detecting of ageing symptoms of a component having regularly recurring structures, includes the following steps: a) scanning the component in the region of the recurring structures in a plurality of scanning planes which extend parallel to one another to create at least one scanning image set having a plurality of two-dimensional scanning images, wherein the scanning images show a plurality of inhomogeneities; b) automatically identifying those inhomogeneities that form recurring patterns, and those inhomogeneities that do not follow a recurring pattern, using a suitable algorithm; and c) detecting ageing symptoms exclusively on the basis of those inhomogeneities which are identified in step b) and do not follow a recurring pattern.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: March 26, 2024
    Assignee: Siemens Energy Global GmbH &Co. KG
    Inventors: Andrey Mashkin, Daniel Hansmann, Friedhelm Pohlmann, Guido Schmidt
  • Publication number: 20240053263
    Abstract: A method and testing device for the non-destructive testing of at least partial regions of an insulation of a stator winding of an electric machine, in particular a generator of a high-voltage motor, wherein the non-destructive testing is carried out in situ at the installation site of the electric machine using terahertz measurement technology.
    Type: Application
    Filed: July 23, 2021
    Publication date: February 15, 2024
    Applicants: Siemens Energy Global GmbH & Co. KG, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Maris Bauer, Fabian Friederich, Daniel Hansmann, Joachim Jonuscheit, Stefan Krane, Andrey Mashkin, Friedhelm Pohlmann, Claus Rohr
  • Publication number: 20220146579
    Abstract: A method for the non-destructive detecting of ageing symptoms of a component having regularly recurring structures, includes the following steps: a) scanning the component in the region of the recurring structures in a plurality of scanning planes which extend parallel to one another to create at least one scanning image set having a plurality of two-dimensional scanning images, wherein the scanning images show a plurality of inhomogeneities; b) automatically identifying those inhomogeneities that form recurring patterns, and those inhomogeneities that do not follow a recurring pattern, using a suitable algorithm; and c) detecting ageing symptoms exclusively on the basis of those inhomogeneities which are identified in step b) and do not follow a recurring pattern.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 12, 2022
    Applicant: Siemens Energy Global GmbH & Co. KG
    Inventors: Andrey Mashkin, Daniel Hansmann, Friedhelm Pohlmann, Guido Schmidt
  • Publication number: 20210359576
    Abstract: A water chamber cover for connecting a water hose to a water chamber bottom plate of a directly water-cooled stator bar, having a peripheral groove, which is open on a side facing away from the water chamber and which is designed to hold the water hose. A method is for assembling a cooling water circuit for a directly water-cooled stator bar.
    Type: Application
    Filed: July 13, 2017
    Publication date: November 18, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andrey MASHKIN, Mario BROCKSCHMIDT, Christoph LEHMANN, Daniel HANSMANN, Rene HÖHNER, Ralf MERTE, Friedhelm POHLMANN, Markus WYSGOL
  • Patent number: 10910897
    Abstract: A water-cooled generator strip having at least two conductor stacks which are arranged parallel and in each case have a plurality of conductors arranged one above the other and electrically insulated from one another by a conductor insulation, wherein the conductors are secured geometrically relative to one another by a cured resin, and wherein between the conductor stacks a gap space is provided, in which at least one cooling channel is arranged for conveying cooling water.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: February 2, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andrey Mashkin, Mario Brockschmidt, Ralf Merte, Friedhelm Pohlmann, Christoph Lehmann, Bobby A. Warren
  • Patent number: 10902972
    Abstract: High-voltage insulation systems are simplified and can have a thinner design by the use of an external corona shielding system that may include an electrically conductive PTFE fabric. Thermal conductivity may also be improved.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: January 26, 2021
    Inventors: Mario Brockschmidt, Peter Gröppel, Friedhelm Pohlmann, Claus Rohr, Roland Röding
  • Publication number: 20200321821
    Abstract: A corona shield for an electric machine, has a varnish that contains a first polymer resin, first electrically conductive particles that are dispersed in the first polymer resin, and microcapsules which are dispersed in the first polymer resin and include a second polymer resin in their interior.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 8, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventors: Mario Brockschmidt, Christopher Eckert, Manuel Ettler, Vera Kristin Franke, Rene Höhner, Andrey Mashkin, Friedhelm Pohlmann, Guido Schmidt, Ralph Seybold, Christian Staubach
  • Publication number: 20200195077
    Abstract: An electrical insulation tape for a high-voltage electrical machine, having a particle composite that can be impregnated, which has a plurality of platelet-shaped electrical insulation particles, and having first spacing particles, which are applied to the surface of the electrical insulation tape such that the porosity of the electrical insulation tape is higher in the region of the first spacing particles than in the region of the particle composite that can be impregnated.
    Type: Application
    Filed: January 9, 2018
    Publication date: June 18, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andrey Mashkin, Mario Brockschmidt, Friedhelm Pohlmann
  • Patent number: 10615658
    Abstract: A corona shielding system for a high voltage machine including a sleeve for a live conductor of the high voltage machine, wherein the sleeve has an electrically conductive lacquer, wherein a filler is added to the conductive lacquer, the filler at least partially including a thermoexpanding filler, is provided. A repair lacquer and a method for production is further provided.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: April 7, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Alexander Litinsky, Andrey Mashkin, Friedhelm Pohlmann, Guido Schmidt, Christian Staubach
  • Patent number: 10479857
    Abstract: An anhydride-free impregnating resin for an electrical insulation body, the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles. An impregnable electrical insulating tape for an electrical insulation body has a curing agent applied to the electrical insulating tape. A method includes producing an electrical insulation body An electrical insulation body includes an anhydride-free impregnating resin, where the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: November 19, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Peter Gröppel, Michael Nagel, Mario Brockschmidt, Regina Mühlberg, Friedhelm Pohlmann, Roland Röding, Manuel Weil
  • Publication number: 20190245399
    Abstract: A water-cooled generator strip having at least two conductor stacks which are arranged parallel and in each case have a plurality of conductors arranged one above the other and electrically insulated from one another by a conductor insulation, wherein the conductors are secured geometrically relative to one another by a cured resin, and wherein between the conductor stacks a gap space is provided, in which at least one cooling channel is arranged for conveying cooling water.
    Type: Application
    Filed: May 31, 2017
    Publication date: August 8, 2019
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andrey Mashkin, Mario Brockschmidt, Ralf Merte, Friedhelm Pohlmann, Christoph Lehmann, Bobby A. Warren
  • Patent number: 10284042
    Abstract: By using an electrically conductive PTFE fabric, high-voltage insulation systems are simplified and can be made thinner, also improving the thermal conductivity. The insulation material is in two layers, each with a hydrophobic and a hydrophobic region, and the hydrophobic regions of the layers are opposed.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: May 7, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Mario Brockschmidt, Peter Gröppel, Friedhelm Pohlmann, Claus Rohr, Roland Röding
  • Publication number: 20190131841
    Abstract: An electric machine having an electrical conductor, a main insulation surrounding the conductor, an outer corona shield surrounding the main insulation, a laminated core having grooves, into which grooves the conductor is inserted, and an electrically conductive layer, which is arranged radially outside of the outer corona shield and is designed to connect the outer corona shield to the laminated core in an electrically conductive manner. The adhesions of the main insulation, the outer corona shield, the electrically conductive layer, and the laminated core are coordinated with each other in such a way that the lowest adhesion is present at a surface of the electrically conductive layer.
    Type: Application
    Filed: March 3, 2017
    Publication date: May 2, 2019
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andrey Mashkin, Mario Brockschmidt, Christian Staubach, Friedhelm Pohlmann, Guido Schmidt
  • Publication number: 20190131842
    Abstract: The corona shield can be applied in electric machines in a faster manner by using radiation-cured materials.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 2, 2019
    Inventors: Mario BROCKSCHMIDT, Stefan KEMPEN, Friedhelm POHLMANN, Guido SCHMIDT
  • Publication number: 20190035514
    Abstract: An impregnable electrical insulating paper for an electrical insulating body having first platelet-shaped particles which have layer silicates, and second platelet-shaped particles which have a heat conductivity at 20° C. of at least 1 W/mK. A method for producing an impregnable electrical insulating paper, an electrical insulating tape, an electrical insulating body, and the use of the electrical insulating body having first platelet-shaped particles which have layer silicates, and second platelet-shaped particles.
    Type: Application
    Filed: September 1, 2016
    Publication date: January 31, 2019
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andrey Mashkin, Mario Brockschmidt, Friedhelm Pohlmann
  • Patent number: 10186924
    Abstract: The corona shield can be applied in electric machines in a faster manner by using radiation-cured materials.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: January 22, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Mario Brockschmidt, Stefan Kempen, Friedhelm Pohlmann, Guido Schmidt
  • Patent number: 10087198
    Abstract: A compound having the structural formula R1CO2? R2CO2? Zn2+ used as a reaction accelerator for the copolymerization of a mixture of a carboxylic acid anhydride and an oxirane, wherein R1 and R2 are a straight-chained or branched alkyl group independently of each other.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: October 2, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mario Brockschmidt, Friedhelm Pohlmann, Frank Rainer
  • Publication number: 20180171066
    Abstract: An anhydride-free impregnating resin for an electrical insulation body, the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles. An impregnable electrical insulating tape for an electrical insulation body has a curing agent applied to the electrical insulating tape. A method includes producing an electrical insulation body An electrical insulation body includes an anhydride-free impregnating resin, where the impregnating resin has an epoxy resin, a curing agent and nanoscale and/or microscale inorganic particles.
    Type: Application
    Filed: April 14, 2016
    Publication date: June 21, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: Peter Gröppel, Michael Nagel, Mario Brockschmidt, Regina Mühlberg, Friedhelm Pohlmann, Roland Röding, Manuel Weil
  • Publication number: 20180068757
    Abstract: High-voltage insulation systems are simplified and can have a thinner design by the use of an external corona shielding system that may include an electrically conductive PTFE fabric. Thermal conductivity may also be improved.
    Type: Application
    Filed: November 10, 2017
    Publication date: March 8, 2018
    Inventors: Mario BROCKSCHMIDT, Peter GRÖPPEL, Friedhelm POHLMANN, Claus ROHR, Roland RÖDING
  • Patent number: 9884950
    Abstract: An impregnating resin for an electrical insulation body includes a base resin, a filler having nanoscale particles, and a radically polymerizing reactive diluent. The impregnating resin includes a crosslinker for crosslinking the base resin and the reactive diluents. The base resin is an epoxy resin. An electrical insulation body includes the impregnating resin and a method produces the electrical insulation body by production of an impregnating resin having a base resin, a filler having nanosize particles and a free-radically polymerizing reactive diluent.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: February 6, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mario Brockschmidt, Friedhelm Pohlmann, Frank Rainer