Patents by Inventor Waleed Sahhary

Waleed Sahhary 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).

  • Battery system comprising a hybrid battery and an NPC inverter which is connected at the input end to the battery, and method for operating an NPC inverter which is connected at the input end to a hybrid battery
    Patent number: 10075094
    Abstract: The present invention relates to a battery system which has a hybrid battery which comprises a first energy storage source having a plurality of first energy storage cells and comprises a second energy storage source which is connected in series with the first energy storage source and has a plurality of second energy storage cells which are different from the first energy storage cells. Furthermore, the battery system has an inverter which is connected at the input end to the battery and is designed to convert a DC voltage which is supplied to the input end into an, in particular polyphase, AC voltage which is produced at the output end. The battery system also has a control unit which is designed to operate the inverter in a first functional mode or in a second functional mode or in a third functional mode by controlling a plurality of semiconductor switches of the inverter.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: September 11, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Waleed Sahhary, Christoph Woll, Volker Doege
  • BATTERY SYSTEM COMPRISING A HYBRID BATTERY AND AN NPC INVERTER WHICH IS CONNECTED AT THE INPUT END TO THE BATTERY, AND METHOD FOR OPERATING AN NPC INVERTER WHICH IS CONNECTED AT THE INPUT END TO A HYBRID BATTERY
    Publication number: 20170331392
    Abstract: The present invention relates to a battery system which has a hybrid battery which comprises a first energy storage source having a plurality of first energy storage cells and comprises a second energy storage source which is connected in series with the first energy storage source and has a plurality of second energy storage cells which are different from the first energy storage cells. Furthermore, the battery system has an inverter which is connected at the input end to the battery and is designed to convert a DC voltage which is supplied to the input end into an, in particular polyphase, AC voltage which is produced at the output end. The battery system also has a control unit which is designed to operate the inverter in a first functional mode or in a second functional mode or in a third functional mode by controlling a plurality of semiconductor switches of the inverter.
    Type: Application
    Filed: October 20, 2015
    Publication date: November 16, 2017
    Inventors: Waleed Sahhary, Christoph Woll, Volker Doege
  • ELECTRIC DRIVE SYSTEM AND METHOD FOR OPERATING AN ELECTRIC MACHINE FOR AN ELECTRIC VEHICLE
    Publication number: 20170232862
    Abstract: The invention relates to an electric drive system and to a method for operating an electric machine, in which the electric machine is controlled in a first operating mode using a first voltage. In order to temporarily increase the power, the electric machine can also be controlled in a second operating mode, in which the voltage used for the control is increased by an additional energy source.
    Type: Application
    Filed: August 27, 2015
    Publication date: August 17, 2017
    Inventors: Christoph Woll, Klaus Beulich, Waleed Sahhary