Patents by Inventor Kari KOVANEN

Kari KOVANEN 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: 10693391
    Abstract: A method for operating an inverter and an inverter configured to convert DC power supplied from a DC power source into AC power supplied to an AC network by applying operational parameter limits which define limits for allowed operating points of the inverter, collect, during the converting, data of operational conditions related to the inverter, determine on the basis of the collected data whether the set operational parameter limits can be optimized with regard to one or more optimization criteria, and in response to determining that the set operational parameter limits can be optimized, adapt one or more of the set operational parameter limits applied in the converting on the basis of the collected data.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: June 23, 2020
    Assignee: ABB Schweiz AG
    Inventors: Kari Kovanen, Hannu Haapaniemi, Marko Harju
  • Publication number: 20190020286
    Abstract: A method for operating an inverter and an inverter configured to convert DC power supplied from a DC power source into AC power supplied to an AC network by applying operational parameter limits which define limits for allowed operating points of the inverter, collect, during the converting, data of operational conditions related to the inverter, determine on the basis of the collected data whether the set operational parameter limits can be optimized with regard to one or more optimization criteria, and in response to determining that the set operational parameter limits can be optimized, adapt one or more of the set operational parameter limits applied in the converting on the basis of the collected data.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 17, 2019
    Inventors: Kari Kovanen, Hannu Haapaniemi, Marko Harju
  • Patent number: 8704406
    Abstract: A solar power plant is disclosed for converting solar energy into electric energy, and having a plurality of solar cell units, each solar cell unit containing a first cell pole and a second cell pole. The cell poles can cooperate for feeding electric energy produced by the solar cell unit as direct current out of the solar cell unit. A direct-current converter can include a plurality of direct-current input poles and two direct-current output poles, each direct-current input pole being connected to at least one cell pole. The direct-current converter can convert input direct currents entered via the direct-current input poles, and having input voltages, into an output direct current having an output voltage, and feed the output direct current via the direct-current output poles out of the direct-current converter.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: April 22, 2014
    Assignee: ABB Oy
    Inventors: Jussi â„«kerberg, Kari Kovanen, Peter Lindgren
  • Publication number: 20120300525
    Abstract: An exemplary converter arrangement and method in connection with the arrangement includes a converter arranged in a closed container or similar structure. The container has a high voltage compartment and a low voltage compartment. The high voltage compartment includes a transformer connectable to a network to be supplied and the low voltage compartment includes the converter. The arrangement being configured to exchange heat from the high voltage compartment to the low voltage compartment and heating the low voltage compartment with losses of the transformer.
    Type: Application
    Filed: May 29, 2012
    Publication date: November 29, 2012
    Applicant: ABB Oy
    Inventors: Timo Koivuluoma, Kari Kovanen, Juhani Helosvouri
  • Publication number: 20100180926
    Abstract: A solar power plant is disclosed for converting solar energy into electric energy, and having a plurality of solar cell units, each solar cell unit containing a first cell pole and a second cell pole. The cell poles can cooperate for feeding electric energy produced by the solar cell unit as direct current out of the solar cell unit. A direct-current converter can include a plurality of direct-current input poles and two direct-current output poles, each direct-current input pole being connected to at least one cell pole. The direct-current converter can convert input direct currents entered via the direct-current input poles, and having input voltages, into an output direct current having an output voltage, and feed the output direct current via the direct-current output poles out of the direct-current converter.
    Type: Application
    Filed: January 12, 2010
    Publication date: July 22, 2010
    Applicant: ABB OY
    Inventors: Jussi AKERBERG, Kari KOVANEN, Peter LINDGREN