Patents by Inventor Dennis Tyczkowski

Dennis Tyczkowski 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).

  • AC motor bypass with fault annunciation, serial communication and fault tolerant coil control
    Patent number: 7948721
    Abstract: A motor bypass is controlled by a digital signal processor (DSP) with embedded control software that allows fault detection and annunciation, serial communications between both a variable frequency drive (VFD) and a bypass controller and the bypass controller and a host computer. The use of the DSP and embedded control software further allows for contactor coil control to provide fault tolerant operation as well as fault condition detection and annunciation to the user.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: May 24, 2011
    Assignee: ABB Inc.
    Inventors: Jeffrey A. Brunner, Kalyan P. Gokhale, Douglas Karraker, Donald J. Truettner, Dennis Tyczkowski
  • AC Motor Bypass With Fault Annunication, Serial Communication And Fault Tolerant Coil Control
    Publication number: 20090167229
    Abstract: A motor bypass is controlled by a digital signal processor (DSP) with embedded control software that allows fault detection and annunciation, serial communications between both a variable frequency drive (VFD) and a bypass controller and the bypass controller and a host computer. The use of the DSP and embedded control software further allows for contactor coil control to provide fault tolerant operation as well as fault condition detection and annunciation to the user.
    Type: Application
    Filed: December 29, 2008
    Publication date: July 2, 2009
    Inventors: Jeffrey A. Brunner, Kalyan P. Gokhale, Douglas Karraker, Donald J. Truettner, Dennis Tyczkowski
  • Method and apparatus for detecting faults in AC to AC, or DC to AC power conversion equipments when the equipment is in a high impedance mode
    Patent number: 7154277
    Abstract: A system for use in ac to ac or dc to ac power conversion equipment to detect faults in an inverter when the inverter is in a high impedance mode. The system detects ground faults or cross wiring conditions by converting the inverter outputs to digital signals and evaluating the frequencies of the resulting signals. The system keeps the inverter in the high impedance mode until after it has been determined that neither of the described abnormal statuses exist. The system tests for both of the abnormal statuses on power up and thereafter tests only for a ground fault whenever the inverter switches are disabled.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: December 26, 2006
    Assignee: ABB Inc.
    Inventors: Alpo K. Vallinmaki, Douglas Karraker, Dennis Tyczkowski
  • Method and apparatus for detecting faults in AC to AC, or DC to AC power conversion equipments when the equipment is in a high impedance mode
    Publication number: 20050047035
    Abstract: A system for use in ac to ac or dc to ac power conversion equipment to detect faults in an inverter when the inverter is in a high impedance mode. The system detects ground faults or cross wiring conditions by converting the inverter outputs to digital signals and evaluating the frequencies of the resulting signals. The system keeps the inverter in the high impedance mode until after it has been determined that neither of the described abnormal statuses exist. The system tests for both of the abnormal statuses on power up and thereafter tests only for a ground fault whenever the inverter switches are disabled.
    Type: Application
    Filed: August 20, 2004
    Publication date: March 3, 2005
    Inventors: Alpo Vallinmaki, Douglas Karraker, Dennis Tyczkowski