Patents Assigned to Sigmagen, Inc.
  • Patent number: 12676487
    Abstract: A multi-modal maximum power point tracking optimization solar photovoltaic system is provided. A maximum power point tracking optimizer is connected to and powered by at least one solar cell.
    Type: Grant
    Filed: August 5, 2024
    Date of Patent: July 7, 2026
    Assignee: SIGMAGEN, INC.
    Inventors: Mehrdad M. Moslehi, Benjamin Sheahan, Gary Kendall
  • Patent number: 12562669
    Abstract: A portable solar photovoltaic (PV) electricity generator module comprises a plurality of smart power slat (SPS) units, each SPS unit comprising a plurality of solar cells electrically connected together based on a specified cell interconnection design, and, at least one power maximizing integrated circuit collecting electricity generated by the plurality of solar cells. The plurality of SPS units are mechanically connected such that the SPS units can be retracted for volume compaction of the module, and can be expanded for increasing PV electricity generation by the module. The module can be used as part of an electric power supply with a maximum power point tracking (MPPT) power optimizer, storage battery and leads to connect to a load. The load can be AC or DC.
    Type: Grant
    Filed: July 15, 2024
    Date of Patent: February 24, 2026
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 12456948
    Abstract: A remote-access switch and monitoring circuit for a solar photovoltaic module includes input and output leads connected via a remotely controllable series switch. The switch toggles between an on state that allows power delivery to a load and an off state that creates an open-circuit condition. A voltage measurement circuit performs real-time measurements of module voltage under both switch states during the daily power generation period. A current measurement circuit performs real-time current measurements when the series switch is on and a parallel switch is off. A temperature sensor records circuit temperature corresponding to ambient temperatures at daily wake-up and sleep times. A communication circuit transmits the collected voltage, current, and temperature data to a remote receiver.
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: October 28, 2025
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 12431714
    Abstract: Disclosed herein is add-on electronic circuit structures and methods for providing protection against reverse-electrical-current failures and for enabling comprehensive electrical (current-voltage sweep) and electro-optical (electroluminescence or EL using reserve current flow) testing of solar photovoltaic cells and modules having at least one multi-modal maximum-power-point tracking (MPPT) power optimizer integrated circuit chip to increase electrical energy generation yield of the modules. Such multi-modal MPPT power optimizer chips are used for distributed solar electric power generation enhancement in solar photovoltaic cells, modules, and systems under realistic operating conditions with non-ideal manufacturing and environmental variations (e.g., variable and/or non-uniform sunlight or daylight, mismatched cells, etc.).
    Type: Grant
    Filed: January 9, 2024
    Date of Patent: September 30, 2025
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 12352469
    Abstract: Solar photovoltaic window blind slats for power generation from internal and external light sources are provided are provided. A plurality of solar cells are attached to at least two sides of a slat core. Distributed maximum power point tracking optimizer components are associated with each solar cell. The solar cells and corresponding distributed maximum power point tracking optimizer components on each slat side are connected in electrical series.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: July 8, 2025
    Assignee: Sigmagen, Inc.
    Inventors: Mehrdad M. Moslehi, Pawan Kapur
  • Patent number: 12062919
    Abstract: A multi-modal maximum power point tracking optimization solar photovoltaic system is provided. A maximum power point tracking optimizer is connected to and powered by at least one solar cell.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: August 13, 2024
    Assignee: SIGMAGEN, INC.
    Inventors: Mehrdad M. Moslehi, Benjamin Sheahan, Gary Kendall
  • Patent number: 12051989
    Abstract: A portable solar photovoltaic (PV) electricity generator module comprises a plurality of smart power slat (SPS) units, each SPS unit comprising a plurality of solar cells electrically connected together based on a specified cell interconnection design, and, at least one power maximizing integrated circuit collecting electricity generated by the plurality of solar cells. The plurality of SPS units are mechanically connected such that the SPS units can be retracted for volume compaction of the module, and can be expanded for increasing PV electricity generation by the module. The module can be used as part of an electric power supply with a maximum power point tracking (MPPT) power optimizer, storage battery and leads to connect to a load. The load can be AC or DC.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: July 30, 2024
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 11901738
    Abstract: Disclosed herein is add-on electronic circuit structures and methods for providing protection against reverse-electrical-current failures and for enabling comprehensive electrical (current-voltage sweep) and electro-optical (electroluminescence or EL using reserve current flow) testing of solar photovoltaic cells and modules having at least one multi-modal maximum-power-point tracking (MPPT) power optimizer integrated circuit chip to increase electrical energy generation yield of the modules. Such multi-modal MPPT power optimizer chips are used for distributed solar electric power generation enhancement in solar photovoltaic cells, modules, and systems under realistic operating conditions with non-ideal manufacturing and environmental variations (e.g., variable and/or non-uniform sunlight or daylight, mismatched cells, etc.).
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: February 13, 2024
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 11888441
    Abstract: A method for calculating a real-time effective temperature of a solar photovoltaic module at any operating time during power generation period between a daily wake-up time and sleep time of said solar photovoltaic module is provided. The method is based on, in part, measuring the solar photovoltaic module open-circuit voltage at said daily wake-up time and measuring the solar photovoltaic module open-circuit voltage at said operating time.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: January 30, 2024
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 11867431
    Abstract: Solar photovoltaic window blind slats for power generation from internal and external light sources are provided are provided. A plurality of solar cells are attached to at least two sides of a slat core. Distributed maximum power point tracking optimizer components are associated with each solar cell. The solar cells and corresponding distributed maximum power point tracking optimizer components on each slat side are connected in electrical series.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: January 9, 2024
    Assignee: Sigmagen, Inc.
    Inventors: Mehrdad M. Moslehi, Pawan Kapur
  • Patent number: 11569778
    Abstract: A portable solar photovoltaic (PV) electricity generator module comprises a plurality of smart power slat (SPS) units, each SPS unit comprising a plurality of solar cells electrically connected together based on a specified cell interconnection design, and, N at least one power maximizing integrated circuit collecting electricity generated by the plurality of solar cells. The plurality of SPS units are mechanically connected such that the SPS units can be retracted for volume compaction of the module, and can be expanded for increasing PV electricity generation by the module. The module can be used as part of an electric power supply with a maximum power point tracking (MPPT) power optimizer, storage battery and leads to connect to a load. The load can be AC or DC.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: January 31, 2023
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi
  • Patent number: 10784815
    Abstract: A photovoltaic module remote-access module switch and real-time temperature monitoring system is provided. In one embodiment, a remote-access module switch and monitoring circuit capable of communicating with a remote receiver and having a pair of output electrical leads, and a pair of input electrical leads connected to a pair of electrical power leads of a solar photovoltaic module is provided, and which further includes a series switch, a module voltage measurement circuit, a module current measurement circuit, a temperature sensor, and a communication circuit.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: September 22, 2020
    Assignee: Sigmagen, Inc.
    Inventor: Mehrdad M. Moslehi