Patents by Inventor HANS FRIEDRICH STEFFANI

HANS FRIEDRICH STEFFANI 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: 10454406
    Abstract: A dynamo-electric machine includes a laminated stator, a laminated rotor and a winding system disposed in the laminated stator and/or the laminated rotor and forming a winding overhang on end faces of the laminated stator and/or laminated rotor. The winding system includes a signaling line to detect interturn faults generated by a high heat. An insulation of signaling lines or a wire of the signaling lines is configured to be temperature-sensitive so that a melting point of the insulation or of the wire is about 30 degrees Kelvin above the temperature class of the dynamo-electric machine.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: October 22, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Marco Köhler, Christoph Adam, Hans Friedrich Steffani, Bernhard Volk
  • Publication number: 20180262154
    Abstract: A dynamo-electric machine includes a laminated stator, a laminated rotor and a winding system disposed in the laminated stator and/or the laminated rotor and forming a winding overhang on end faces of the laminated stator and/or laminated rotor. The winding system includes a signaling line to detect interturn faults generated by a high heat. An insulation of signaling lines or a wire of the signaling lines is configured to be temperature-sensitive so that a melting point of the insulation or of the wire is about 30 degrees Kelvin above the temperature class of the dynamo-electric machine.
    Type: Application
    Filed: November 20, 2015
    Publication date: September 13, 2018
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Marco Köhler, CHRISTOPH ADAM, HANS FRIEDRICH STEFFANI, BERNHARD VOLK
  • Patent number: 9592737
    Abstract: The invention relates to a drive system (1). The drive system (1) has at least two inverters (3, 31, 32, 33) and at least two motors (2). Each of the motors (2), each of which has a stator and a rotor, has at least one first coil system (21) and a second coil system (22) in the stator. Each first coil system (21) is connected to a first inverter (31) in an electrically conductive manner, and each second coil system (22) is connected to a second inverter (32) in an electrically conductive manner. The invention further relates to a method for the redundant operation of a drive system (1), wherein at least one motor exchanges electric energy with the second inverter (32) and/or one or more additional inverters (33) if the first inverter (31) fails.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: March 14, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Hans Friedrich Steffani
  • Publication number: 20160347180
    Abstract: The invention relates to a drive system (1). The drive system (1) has at least two inverters (3, 31, 32, 33) and at least two motors (2). Each of the motors (2), each of which has a stator and a rotor, has at least one first coil system (21) and a second coil system (22) in the stator. Each first coil system (21) is connected to a first inverter (31) in an electrically conductive manner, and each second coil system (22) is connected to a second inverter (32) in an electrically conductive manner. The invention further relates to a method for the redundant operation of a drive system (1), wherein at least one motor exchanges electric energy with the second inverter (32) and/or one or more additional inverters (33) if the first inverter (31) fails.
    Type: Application
    Filed: January 7, 2015
    Publication date: December 1, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventor: HANS FRIEDRICH STEFFANI