Patents Represented by Attorney Melissa Szczepanik

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  • 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