Patents by Inventor Christoph PERNEGGER

Christoph PERNEGGER 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).

  • Method and photovoltaic inverter for determining the system capacity of a photovoltaic system to ground
    Patent number: 11656256
    Abstract: A method and a photovoltaic inverter determines the system capacitance of a photovoltaic system relative to ground. The voltage required for the measurement can be provided by the intermediate circuit in the form of the intermediate circuit voltage, and the measuring device is designed to actuate an input short-circuit switch for short-circuiting the DC input with the AC disconnector open, as a result of which the intermediate circuit voltage can be applied to the DC input in the reverse direction, and the measuring device is configured to determine the system capacitance from the temporal waveform of the measured voltage after the switch of the voltage divider is closed.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: May 23, 2023
    Assignee: Fronius International GmbH
    Inventors: Franz Fischereder, Andreas Luger, Christoph Pernegger, Juergen Pirchenfellner
  • METHOD AND PHOTOVOLTAIC INVERTER FOR DETERMINING THE SYSTEM CAPACITY OF A PHOTOVOLTAIC SYSTEM TO GROUND
    Publication number: 20220334159
    Abstract: A method and a photovoltaic inverter determines the system capacitance of a photovoltaic system relative to ground. The voltage required for the measurement can be provided by the intermediate circuit in the form of the intermediate circuit voltage, and the measuring device is designed to actuate an input short-circuit switch for short-circuiting the DC input with the AC disconnector open, as a result of which the intermediate circuit voltage can be applied to the DC input in the reverse direction, and the measuring device is configured to determine the system capacitance from the temporal waveform of the measured voltage after the switch of the voltage divider is closed.
    Type: Application
    Filed: March 10, 2021
    Publication date: October 20, 2022
    Applicant: Fronius International GmbH
    Inventors: Franz FISCHEREDER, Andreas LUGER, Christoph PERNEGGER, Juergen PIRCHENFELLNER