Patents by Inventor Frank Rueckmann

Frank Rueckmann 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).

  • Multi-string inverter having input-side EMC filter
    Patent number: 9614427
    Abstract: An inverter includes a DC/AC converter, a DC intermediate circuit on the direct current input side of the DC/AC converter, multiple DC/DC converters connected in parallel to one another on the output side to the DC intermediate circuit, multiple inputs each coupled to one of the DC/DC converters, and an EMC filter connected between the inputs and the DC/DC converters. The EMC filter includes chokes in all current-carrying lines between the inputs and the DC/DC converters and filter capacitors between the inputs and the DC/DC converters leading from all the current-carrying lines to ground. The chokes in all current-carrying lines from the at least two inputs are formed by means of choke windings on a common core of a current-compensated choke.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: April 4, 2017
    Assignee: SMA SOLAR TECHNOLOGY AG
    Inventors: Niels Berger, Tomasz Napierala, Stefan Buchhold, Julia Pinne, Frank Rueckmann, Henrik Wolf
  • MULTI-STRING INVERTER HAVING INPUT-SIDE EMC FILTER
    Publication number: 20150222170
    Abstract: An inverter includes a DC/AC converter, a DC intermediate circuit on the direct current input side of the DC/AC converter, multiple DC/DC converters connected in parallel to one another on the output side to the DC intermediate circuit, multiple inputs each coupled to one of the DC/DC converters, and an EMC filter connected between the inputs and the DC/DC converters. The EMC filter includes chokes in all current-carrying lines between the inputs and the DC/DC converters and filter capacitors between the inputs and the DC/DC converters leading from all the current-carrying lines to ground. The chokes in all current-carrying lines from the at least two inputs are formed by means of choke windings on a common core of a current-compensated choke.
    Type: Application
    Filed: April 10, 2015
    Publication date: August 6, 2015
    Inventors: Niels Berger, Tomasz Napierala, Stefan Buchhold, Julia Pinne, Frank Rueckmann, Henrik Wolf