Patents by Inventor Mikko Kauppinen

Mikko Kauppinen 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: 11993479
    Abstract: An electrical converter unit and a method for reducing thermal stress of a power semiconductor switch, such as an IGBT, of an electrical converter unit, the electrical converter unit comprising at least a gate control circuit wherein the electrical converter unit controls an electrical motor. The method comprises determining load and estimating required motor current based on the determined load and/or a predetermined speed profile. The electrical converter unit has at least a first operating state and a second operating state. The second operating state is used if predetermined criteria is fulfilled, the predetermined criteria relating to at least one of the following: estimated required current, measured motor speed, temperature of the power semiconductor switch and/or electrical converter unit, temperature model of the power semiconductor switch and/or electrical converter unit.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: May 28, 2024
    Assignee: KONE Corporation
    Inventors: Mikko Paakkinen, Lauri Stolt, Tuukka Kauppinen
  • Publication number: 20240101390
    Abstract: The invention relates to an elevator drive unit for managing a regenerative power of an elevator system. The elevator drive unit comprises: first terminals for connecting the elevator drive unit to the mains; second terminals for connecting the elevator drive unit to an elevator hoisting motor; a frequency converter for enabling a bidirectional transfer of power between the mains and the elevator hoisting motor; and a control unit. The control unit is configured to: obtain an indication representing a detection of a special operational situation of the elevator system, introduce a non-zero power limit specific to the detected special operational situation of the elevator system, and control the frequency converter to limit supply of the regenerative power from the elevator hoisting motor to the mains to the power limit. The invention relates also to an elevator system and a method for managing a regenerative power of an elevator system.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Applicant: KONE Corporation
    Inventors: Tuukka KAUPPINEN, Mikko PAAKKINEN, Risto JOKINEN, Perttu KAIPIA
  • Patent number: 7678234
    Abstract: A dewatering arrangement in the press section of a web-forming machine having a press suction roll (10) and a press fabric (13) arranged to run via the press suction roll (10). The dewatering arrangement has a saveall (15), which is installed in conjunction with the press suction roll (10), and drainage facilities (18) for removing the collected water from the saveall (15). The saveall (15) has a concave guide surface (19) which in the cross direction is located on a partial distance of the circumference of the press suction roll (10) and at a distance from the surface of the press suction roll (10) in order to accomplish a vacuum effect and to hence remove water from the press suction roll (10).
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: March 16, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Risto Haiko, Erkki Hietamäki, Mikko Kauppinen, Reijo Koivuranta, Kauno Kujala, Pekka Petrilä, Timo Pirinen, Esa Rajala, Markku Salo, Sampo Vörgren
  • Publication number: 20070089848
    Abstract: A dewatering arrangement in the press section of a web-forming machine having a press suction roll (10) and a press fabric (13) arranged to run via the press suction roll (10). The dewatering arrangement has a saveall (15), which is installed in conjunction with the press suction roll (10), and drainage facilities (18) for removing the collected water from the saveall (15). The saveall (15) has a concave guide surface (19) which in the cross direction is located on a partial distance of the circumference of the press suction roll (10) and at a distance from the surface of the press suction roll (10) in order to accomplish a vacuum effect and to hence remove water from the press suction roll (10).
    Type: Application
    Filed: October 18, 2006
    Publication date: April 26, 2007
    Applicant: Metso Paper, Inc.
    Inventors: Risto Haiko, Erkki Hietamaki, Mikko Kauppinen, Reijo Koivuranta, Kauno Kujala, Pekka Petrila, Timo Pirinen, Esa Rajala, Markku Salo, Sampo Vorgren