Patents by Inventor AYMAN ABDEL-KHALIK

AYMAN ABDEL-KHALIK 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).

  • Torque density pseudo six-phase induction machine
    Patent number: 11621598
    Abstract: A method may include providing a stator. The method may also include equipping the stator with quadruple three-phase winding sets with concentrated fully-pitched winding. The quadruple three-phase winding sets may be connected in such a way that emulates a six-phase stator. Further, the quadruple three-phase winding sets may have the same conductor cross-sectional area. In addition, the quadruple three-phase winding sets may include a plurality of winding groups.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 4, 2023
    Assignee: QATAR UNIVERSITY
    Inventors: Ayman Abdel-Khalik, Ahmed Massoud, Shehab Ahmed
  • TORQUE DENSITY PSEUDO SIX-PHASE INDUCTION MACHINE
    Publication number: 20210288539
    Abstract: A method may include providing a stator. The method may also include equipping the stator with quadruple three-phase winding sets with concentrated fully-pitched winding. The quadruple three-phase winding sets may be connected in such a way that emulates a six-phase stator. Further, the quadruple three-phase winding sets may have the same conductor cross-sectional area. In addition, the quadruple three-phase winding sets may include a plurality of winding groups.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 16, 2021
    Inventors: Ayman ABDEL-KHALIK, Ahmed MASSOUD, Shehab AHMED
  • DC side fault isolator for high voltage DC convertors
    Patent number: 9654023
    Abstract: The direct current (DC) side fault isolator for high voltage direct current (HVDC) converters (10) includes a first set of double thyristor switches (12) connected across the line-to-line voltage terminals between first and second phases of alternating current (AC) terminals of a HVDC converter (14), and a second set of double thyristor switches (12) connected across the line-to-line voltage between the second phase and a third phase of the AC terminals of the HVDC converter (14). In use, the first and second sets of double thyristor switches (12) separate the HVDC converter (10) from an external power grid (18) during direct current (DC) side faults by turning on these thyristors (12).
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: May 16, 2017
    Assignee: QATAR FOUNDATIONFOR EDUCATION, SCIENCE AND COMMUNICTY DEVELOPMENT
    Inventors: Ahmed Elserougi, Ayman Abdel-Khalik, Ahmed Massoud, Shehab Ahmed
  • DC SIDE FAULT ISOLATOR FOR HIGH VOLTAGE DC CONVERTORS
    Publication number: 20170033708
    Abstract: The direct current (DC) side fault isolator for high voltage direct current (HVDC) converters (10) includes a first set of double thyristor switches (12) connected across the line-to-line voltage terminals between first and second phases of alternating current (AC) terminals of a HVDC converter (14), and a second set of double thyristor switches (12) connected across the line-to-line voltage between the second phase and a third phase of the AC terminals of the HVDC converter (14). In use, the first and second sets of double thyristor switches (12) separate the HVDC converter (10) from an external power grid (18) during direct current (DC) side faults by turning on these thyristors (12).
    Type: Application
    Filed: January 27, 2015
    Publication date: February 2, 2017
    Applicants: QATAR FOUNDATION FOR EDUCATION, SCIENCE AND COMMUNITY DEVELOPMENT, QATAR UNIVERSITY
    Inventors: AHMED ELSEROUGI, AYMAN ABDEL-KHALIK, AHMED MASSOUD, SHEHAB AHMED