Patents by Inventor Tomasz Kotula

Tomasz Kotula 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).

  • Closed loop control of a cyclo-converter
    Patent number: 9036373
    Abstract: A three-phase resonant cyclo-converter including a closed loop control module for controlling the switching frequency of the cyclo-converter, the closed loop control module including: a voltage signal development module arranged to develop a voltage signal representative of a voltage output waveform of the cyclo-converter, a storage module arranged to accumulate voltage signal values for phase portions of the voltage output waveform, where the voltage signal values are based on a voltage error signal and accumulated historical voltage signal values for the same corresponding phase portions, and a switching frequency control module arranged to develop a switching frequency control signal to control the switching frequency of the cyclo-converter based on the accumulated voltage signal values for corresponding phase portions of the voltage output waveform, and a proportional voltage signal based on a difference between the developed voltage signal and a reference voltage signal.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Eaton Industries Company
    Inventors: Michael John Harrison, Huaqiang Li, Tomasz Kotula, Yakov Familiant
  • Closed Loop Control of a Cyclo-Converter
    Publication number: 20130194844
    Abstract: A three-phase resonant cyclo-converter including a closed loop control module for controlling the switching frequency of the cyclo-converter, the closed loop control module including: a voltage signal development module arranged to develop a voltage signal representative of a voltage output waveform of the cyclo-converter, a storage module arranged to accumulate voltage signal values for phase portions of the voltage output waveform, where the voltage signal values are based on a voltage error signal and accumulated historical voltage signal values for the same corresponding phase portions, and a switching frequency control module arranged to develop a switching frequency control signal to control the switching frequency of the cyclo-converter based on the accumulated voltage signal values for corresponding phase portions of the voltage output waveform, and a proportional voltage signal based on a difference between the developed voltage signal and a reference voltage signal.
    Type: Application
    Filed: June 15, 2011
    Publication date: August 1, 2013
    Applicant: Eaton Industries Company
    Inventors: Michael John Harrison, Kevin Lee, Tomasz Kotula, Yakov Familiant