Patents by Inventor Attila Vitez

Attila Vitez 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).

  • CIRCUIT ARRANGEMENT AND A METHOD FOR CONTROLLING AN AC DRIVE SYSTEM OF AN ELECTRIC VEHICLE
    Publication number: 20150115705
    Abstract: Circuit arrangement for controlling an AC drive system of an electric vehicle comprising at least one asynchronous drive motor (1) associated with at least one wheel of the vehicle, at least one frequency converter unit (3) having at least one AC heavy-current input and at least one AC heavy-current output (U/T1, V/T2, W/T3), the at least one AC heavy-current output (U/T1, V/T2, W/T3) is in connection with the at least one asynchronous drive motor (1), a battery unit (7) supplying current consumers of the vehicle, including the at least one frequency converter unit (3), a control unit (19) connected to the at least one frequency converter unit (3), wherein a direct current output of the battery unit (7) is connected through a switching unit (5) to terminals (+,?) for an optional external DC choke of the at least one frequency converter unit (3, 4).
    Type: Application
    Filed: April 19, 2013
    Publication date: April 30, 2015
    Inventors: János Toth, Attila Vitez, Istvan Liker, Geza Husi, Istvan Bartha