Patents by Inventor Minhao Sheng

Minhao Sheng 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).

  • Patent number: 11531075
    Abstract: An improved system for measuring current within a power semiconductor module is disclosed, where the system is integrated within the power module. The system includes a point field detector sensing a magnetic field resulting from current flowing in one phase of the module. A lead frame conductor may be provided to shape the magnetic field and minimize the influence of cross-coupled magnetic fields from currents conducted in other power semiconductor devices within one phase of the module. Optionally, a second point field detector may be provided at a second location within the module to sense a magnetic field resulting from the current flowing in the same phase of the module. Each phase of the power module includes at least one point field detector. A decoupling circuit is provided to decouple multiple currents flowing within the same phase or to decouple currents flowing within different phases of the power module.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: December 20, 2022
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert D. Lorenz, Minhao Sheng, Hiroyuki Nogawa, Yoshinari Ikeda, Eiji Mochizuki
  • Publication number: 20210364581
    Abstract: An improved system for measuring current within a power semiconductor module is disclosed, where the system is integrated within the power module. The system includes a point field detector sensing a magnetic field resulting from current flowing in one phase of the module. A lead frame conductor may be provided to shape the magnetic field and minimize the influence of cross-coupled magnetic fields from currents conducted in other power semiconductor devices within one phase of the module. Optionally, a second point field detector may be provided at a second location within the module to sense a magnetic field resulting from the current flowing in the same phase of the module. Each phase of the power module includes at least one point field detector. A decoupling circuit is provided to decouple multiple currents flowing within the same phase or to decouple currents flowing within different phases of the power module.
    Type: Application
    Filed: August 9, 2021
    Publication date: November 25, 2021
    Inventors: Robert D. Lorenz, Minhao Sheng, Hiroyuki Nogawa, Yoshinari Ikeda, Eiji Mochizuki
  • Patent number: 11085977
    Abstract: An improved system for measuring current within a power semiconductor module is disclosed, where the system is integrated within the power module. The system includes a point field detector sensing a magnetic field resulting from current flowing in one phase of the module. A lead frame conductor may be provided to shape the magnetic field and minimize the influence of cross-coupled magnetic fields from currents conducted in other power semiconductor devices within one phase of the module. Optionally, a second point field detector may be provided at a second location within the module to sense a magnetic field resulting from the current flowing in the same phase of the module. Each phase of the power module includes at least one point field detector. A decoupling circuit is provided to decouple multiple currents flowing within the same phase or to decouple currents flowing within different phases of the power module.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: August 10, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert D. Lorenz, Minhao Sheng, Hiroyuki Nogawa, Yoshinari Ikeda, Eiji Mochizuki
  • Publication number: 20180329002
    Abstract: An improved system for measuring current within a power semiconductor module is disclosed, where the system is integrated within the power module. The system includes a point field detector sensing a magnetic field resulting from current flowing in one phase of the module. A lead frame conductor may be provided to shape the magnetic field and minimize the influence of cross-coupled magnetic fields from currents conducted in other power semiconductor devices within one phase of the module. Optionally, a second point field detector may be provided at a second location within the module to sense a magnetic field resulting from the current flowing in the same phase of the module. Each phase of the power module includes at least one point field detector. A decoupling circuit is provided to decouple multiple currents flowing within the same phase or to decouple currents flowing within different phases of the power module.
    Type: Application
    Filed: May 15, 2017
    Publication date: November 15, 2018
    Inventors: Robert D. Lorenz, Minhao Sheng, Hiroyuki Nogawa, Yoshinari Ikeda, Eiji Mochizuki