Patents by Inventor Marco Kaiser

Marco Kaiser 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 controlling freewheeling paths in a matrix converter
    Patent number: 6603647
    Abstract: A method for controlling positive or negative freewheeling paths of the phases of a matrix converter with nine bidirectional power switches arranged in a 3×3 switch matrix is described. Each power switch has two back-to-back series-connected semiconductor switches. Those semiconductor switches are actuated that have the most positive/negative line voltage to provide a negative/positive freewheeling path capable of carrying a negative/positive load current. The matrix converter can be immediately disconnected if an error is detected or if the matrix converter is inadvertently switched off, without damaging the matrix converter.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: August 5, 2003
    Assignee: Siemens Aktiengesellschaft
    Inventors: Christian Briesen, Manfred Bruckmann, Marco Kaiser, Hubert Schierling, Olaf Simon
  • Method for controlling freewheeling paths in a matrix converter
    Publication number: 20030112640
    Abstract: A method for controlling positive or negative freewheeling paths of the phases of a matrix converter with nine bidirectional power switches arranged in a 3×3 switch matrix is described. Each power switch has two back-to-back series-connected semiconductor switches. Those semiconductor switches are actuated that have the most positive/negative line voltage to provide a negative/positive freewheeling path capable of carrying a negative/positive load current. The matrix converter can be immediately disconnected if an error is detected or if the matrix converter is inadvertently switched off, without damaging the matrix converter.
    Type: Application
    Filed: September 27, 2002
    Publication date: June 19, 2003
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Christian Briesen, Manfred Bruckmann, Marco Kaiser, Hubert Schierling, Olaf Simon