Patents by Inventor Filiph Appelgren

Filiph Appelgren 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).

  • Method to operate a system comprising an energy storage system in response to a bypass request based on a total number of modules to be bypassed
    Patent number: 12500420
    Abstract: There is disclosed herein a method to operate a system comprising an energy storage system (ESS) and a converter. The ESS being connected to the converter such that a DC-side of the converter forms DC terminals between which at least one string of modules of the ESS is connected. The method comprises receiving a bypass request to bypass at least one module in the ESS, based on a total number of modules to be bypassed exceeding a number of redundant modules, controlling the converter to reduce the terminal voltage of the ESS; and after reducing the terminal voltage of the ESS, bypassing the module. There is further disclosed herein a system comprising a central controller performing said method.
    Type: Grant
    Filed: February 28, 2025
    Date of Patent: December 16, 2025
    Assignee: HITACHI ENERGY LTD
    Inventors: Hongyang Zhang, Haofeng Bai, Mikael Tenerz, Filiph Appelgren, Theodore Soong
  • METHOD TO OPERATE A SYSTEM COMPRISING AN ENERGY STORAGE SYSTEM
    Publication number: 20250279651
    Abstract: There is disclosed herein a method to operate a system comprising an energy storage system (ESS) and a converter. The ESS being connected to the converter such that a DC-side of the converter forms DC terminals between which at least one string of modules of the ESS is connected. The method comprises receiving a bypass request to bypass at least one module in the ESS, based on a total number of modules to be bypassed exceeding a number of redundant modules, controlling the converter to reduce the terminal voltage of the ESS; and after reducing the terminal voltage of the ESS, bypassing the module. There is further disclosed herein a system comprising a central controller performing said method.
    Type: Application
    Filed: February 28, 2025
    Publication date: September 4, 2025
    Inventors: Hongyang ZHANG, Haofeng Bai, Mikael Tenerz, Filiph Appelgren, Teodore Soong