Patents by Inventor Klaus Vänskä

Klaus Vänskä 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).

  • Electrical machine with an active grounding
    Patent number: 11342819
    Abstract: A method for preventing a frequency component of a voltage from occurring in an electrical machine including the steps of: obtaining, either by measuring a voltage signal or a current signal from the electrical machine in time domain and transforming the measured signal into frequency domain, by simulating or deducing a first frequency component present in the electrical machine in absence of a grounding, the first frequency component representing a first undesired frequency higher than a limit frequency of 500 Hz; and providing the electrical machine with a first grounding at a grounding location, the first grounding including a resonant circuit resonating at the first undesired frequency. In order to get rid of harmful shaft voltages in the form of sharp voltage peaks at high frequencies, it is first necessary to determine at which undesired frequency or frequencies these voltage peaks occur.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: May 24, 2022
    Assignee: ABB Schweiz AG
    Inventors: Pedro Rodriguez, Subrat Sahoo, Cajetan Pinto, Klaus Vänskä
  • Electric power generating system
    Patent number: 10734930
    Abstract: An electric power generation system and a method in an electric power generation system.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: August 4, 2020
    Assignee: ABB Schweiz AG
    Inventors: Klaus Vänskä, Pasi Pohjanheimo, Sami Kanerva, Mikko Kajava
  • ELECTRICAL MACHINE WITH AN ACTIVE GROUNDING
    Publication number: 20180269753
    Abstract: A method for preventing a frequency component of a voltage from occurring in an electrical machine including the steps of: obtaining, either by measuring a voltage signal or a current signal from the electrical machine in time domain and transforming the measured signal into frequency domain, by simulating or deducing a first frequency component present in the electrical machine in absence of a grounding, the first frequency component representing a first undesired frequency higher than a limit frequency of 500 Hz; and providing the electrical machine with a first grounding at a grounding location, the first grounding including a resonant circuit resonating at the first undesired frequency. In order to get rid of harmful shaft voltages in the form of sharp voltage peaks at high frequencies, it is first necessary to determine at which undesired frequency or frequencies these voltage peaks occur.
    Type: Application
    Filed: October 4, 2016
    Publication date: September 20, 2018
    Inventors: Pedro RODRIGUEZ, Subrat SAHOO, Cajetan PINTO, Klaus VÄNSKÄ
  • ELECTRIC POWER GENERATING SYSTEM
    Publication number: 20170338759
    Abstract: An electric power generation system and a method in an electric power generation system.
    Type: Application
    Filed: October 8, 2015
    Publication date: November 23, 2017
    Inventors: Klaus Vänskä, Pasi Pohjanheimo, Sami Kanerva, Mikko Kajava