Patents by Inventor Ali MEHRIZI-SANI

Ali MEHRIZI-SANI 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).

  • System and method for use with microgrids having inverter-based distributed generators
    Patent number: 11721975
    Abstract: A system and method for controlling microgrids composed of inverter-based distributed generation (IBDG) units. This includes a method using multiple IBDGs to inject impedance-modulated harmonic currents during fault conditions, with each IBDG injecting a unique, differentiable harmonic (i.e., non-fundamental) order from neighboring IBDGs. The method also involves using an inverse time-harmonic-current characteristic to detect faults by locally measuring the harmonic currents injected by IBDGs. A harmonic directional overcurrent relay is also used for fault detection.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: August 8, 2023
    Assignee: HIS MAJESTY THE KING IN RIGHT OF CANADA, AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES
    Inventors: Khaled Saleh, Ali Mehrizi-Sani
  • SYSTEM AND METHOD FOR USE WITH MICROGRIDS HAVING INVERTER-BASED DISTRIBUTED GENERATORS
    Publication number: 20220014021
    Abstract: A system and method for controlling microgrids composed of inverter-based distributed generation (IBDG) units. This includes a method using multiple IBDGs to inject impedance-modulated harmonic currents during fault conditions, with each IBDG injecting a unique, differentiable harmonic (i.e., non-fundamental) order from neighboring IBDGs. The method also involves using an inverse time-harmonic-current characteristic to detect faults by locally measuring the harmonic currents injected by IBDGs. A harmonic directional overcurrent relay is also used for fault detection.
    Type: Application
    Filed: April 30, 2021
    Publication date: January 13, 2022
    Inventors: Khaled SALEH, Ali MEHRIZI-SANI