Patents by Inventor Hans Bängtsson

Hans Bängtsson 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).

  • Track-bound vehicle converter
    Patent number: 10434882
    Abstract: A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: October 8, 2019
    Assignee: Bombardier Transportation GmbH
    Inventors: Hans Bängtsson, Lennart Kruse, Luyu Wang
  • TRACK-BOUND VEHICLE CONVERTER
    Publication number: 20170144551
    Abstract: A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Inventors: HANS BÄNGTSSON, Lennart Kruse, Luyu Wang
  • Track-bound vehicle converter
    Patent number: 9533632
    Abstract: A track-bound vehicle converter comprises a block-wave generator (20) configured to be connected to a direct voltage source (21) and connected to a series resonance link (34), or to an inductive link, for providing the input of a direct converter (41) with semi sinusoidal current pulses. The direct converter has at least one phase leg (42-44) having on one hand one switch (45-47) connected to the link (34) and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (48-50) connected in series therewith. The voltage across the capacitor (48-50) of the direct converter is used to provide a converter output with an alternating voltage.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: January 3, 2017
    Assignee: Bombardier Transportation GmbH
    Inventors: Hans Bängtsson, Lennart Kruse, Luyu Wang