Patents by Inventor Martin Mullis

Martin Mullis 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: 6774608
    Abstract: A power generating device is specified, which comprises a generator (1), which is coupled to a drive unit, in particular to a turbine, and is connected via a rectifier (2) to a DC voltage intermediate circuit (3), an inverter (4), which is connected to the DC voltage intermediate circuit (3) and, on the AC voltage output side, has n phases with n AC voltage connections (5), and a filter arrangement (6), which is connected to the AC voltage connections (5). Furthermore, the filter arrangement (6) has a first filter inductance (7) and a second filter inductance (8), which is connected in series with the first, for each AC voltage connection (5), with a filter capacitor (9) being connected to the junction point of the first filter inductance (7) and the second filter inductance (8), and the filter capacitors (9) being connected to one another in a star circuit at a star point (10).
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: August 10, 2004
    Assignee: ABB Schweiz AG
    Inventors: Bruno Hofstetter, Ingo Golle, Beat Ronner, Martin Mullis
  • Publication number: 20030057923
    Abstract: A power generating device is specified, which comprises a generator (1) , which is coupled to a drive unit, in particular to a turbine, and is connected via a rectifier (2) to a DC voltage intermediate circuit (3), an inverter (4), which is connected to the DC voltage intermediate circuit (3) and, on the AC voltage output side, has n phases with n AC voltage connections (5), and a filter arrangement (6), which is connected to the AC voltage connections (5). Furthermore, the filter arrangement (6) has a first filter inductance (7) and a second filter inductance (8), which is connected in series with the first, for each AC voltage connection (5), with a filter capacitor (9) being connected to the junction point of the first filter inductance (7) and the second filter inductance (8), and the filter capacitors (9) being connected to one another in a star circuit at a star point (10).
    Type: Application
    Filed: September 19, 2002
    Publication date: March 27, 2003
    Inventors: Bruno Hofstetter, Ingo Golle, Beat Ronner, Martin Mullis