Patents by Inventor Arnold K. Mensah-Brown

Arnold K. Mensah-Brown 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).

  • Capacitor precharging and capacitance/resistance measurement in electric vehicle drive system
    Patent number: 9573474
    Abstract: An electric drive system for an electric vehicle has a DC power source and a contactor with an output coupled to a main bus and an input adapted to be connected to the DC power source. The contactor is selectably switched between an open state and a closed state. A link capacitor is coupled to the main bus. A precharge circuit is coupled between the DC power source and the link capacitor comprised of a controlled current source. The controlled current source is selectably activated with the contactor in the open state to charge the link capacitor to a predetermined voltage to before switching the contactor to the closed state.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: February 21, 2017
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Arnold K. Mensah-Brown, Hasdi R. Hashim, Bruce C. Blakemore, Allan R. Gale
  • CAPACITOR PRECHARGING AND CAPACITANCE/RESISTANCE MEASUREMENT IN ELECTRIC VEHICLE DRIVE SYSTEM
    Publication number: 20150251542
    Abstract: An electric drive system for an electric vehicle has a DC power source and a contactor with an output coupled to a main bus and an input adapted to be connected to the DC power source. The contactor is selectably switched between an open state and a closed state. A link capacitor is coupled to the main bus. A precharge circuit is coupled between the DC power source and the link capacitor comprised of a controlled current source. The controlled current source is selectably activated with the contactor in the open state to charge the link capacitor to a predetermined voltage to before switching the contactor to the closed state.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 10, 2015
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Arnold K. Mensah-Brown, Hasdi R. Hashim, Bruce C. Blakemore, Allan R. Gale