Patents by Inventor Ari Heikki Savolainen

Ari Heikki Savolainen 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).

  • Power distribution systems using distributed current sensing
    Patent number: 8890373
    Abstract: A system includes a plurality of power conversion devices, for example, uninterruptible power supply (UPS) devices, having inputs coupled in common to a power input line and each including a control circuit configured to operate the power conversion device responsive to a current sense signal at a current sense input thereof. The system further includes a first current transformer having a primary winding inductively coupled to the power input line, a current sense line coupled in series with a secondary winding of the first current transformer and a plurality of second current transformers, each including a primary winding inductively coupled to the current sense line and including respective secondary windings coupled to respective ones of the current sense inputs.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: November 18, 2014
    Assignee: Eaton Corporation
    Inventors: Ari Heikki Savolainen, Eric Mikael Totterman, Esa Kai Paatero
  • POWER DISTRIBUTION SYSTEMS USING DISTRIBUTED CURRENT SENSING
    Publication number: 20120248897
    Abstract: A system includes a plurality of power conversion devices, for example, uninterruptible power supply (UPS) devices, having inputs coupled in common to a power input line and each including a control circuit configured to operate the power conversion device responsive to a current sense signal at a current sense input thereof. The system further includes a first current transformer having a primary winding inductively coupled to the power input line, a current sense line coupled in series with a secondary winding of the first current transformer and a plurality of second current transformers, each including a primary winding inductively coupled to the current sense line and including respective secondary windings coupled to respective ones of the current sense inputs.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 4, 2012
    Inventors: Ari Heikki Savolainen, Eric Mikael Totterman, Esa Kai Paatero