Patents by Inventor Juhani Vaananen

Juhani Vaananen 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 for changing speed of motor group
    Patent number: 7023169
    Abstract: A method for changing the speed of a motor group, in particular for starting or stopping it, the motor group comprising a plurality of squirrel-cage induction motors or synchronous motors and network converters arranged for their control, when the nominal supply power (Pns), the acceleration power (Pacct) at the final speed (Vmax) of the motors and the losses (Ploss) of the used power are known.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: April 4, 2006
    Assignee: ABB Oy
    Inventors: Ilkka Erkkilä{umlaut over ( )} , Juhani Väänänen
  • Method for changing speed of motor group
    Publication number: 20030057915
    Abstract: A method for changing the speed of a motor group, in particular for starting or stopping it, the motor group comprising a plurality of squirrel-cage induction motors or synchronous motors and network converters arranged for their control, when the nominal supply power (Pns), the acceleration power (Pacct) at the final speed (Vmax) of the motors and the losses (Ploss) of the used power are known.
    Type: Application
    Filed: August 28, 2002
    Publication date: March 27, 2003
    Inventors: Ilkka Erkkila, Juhani Vaananen