Patents by Inventor Karen Ming Zhu

Karen Ming Zhu 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).

  • Multibridge Power Converter With Multiple Outputs
    Publication number: 20230421042
    Abstract: According to one aspect of the present disclosure, there is provided a power converter apparatus that includes at least two switching bridges connected to a Direct Current (DC) bus and both generating pulse-width-modulated (PWM) voltages to non-isolated outputs, and an isolation transformer having a primary winding connected across the outputs of the two switching bridges and a secondary winding connected to isolated outputs. In a non-isolated mode, the two switching bridges are configured to operate in a parallel mode, and power is transferred between the DC bus and the non-isolated outputs. In an isolated mode, the two switching bridges are configured to operate in a full bridge mode, and power is transferred between the DC bus and the isolated outputs through the transformer.
    Type: Application
    Filed: September 13, 2023
    Publication date: December 28, 2023
    Inventors: Huibin Zhu, Karen Ming Zhu
  • Multibridge power converter with multiple outputs
    Patent number: 11817769
    Abstract: According to one aspect of the present disclosure, there is provided a power converter apparatus that includes at least two switching bridges connected to a Direct Current (DC) bus and both generating pulse-width-modulated (PWM) voltages to non-isolated outputs, and an isolation transformer having a primary winding connected across the outputs of the two switching bridges and a secondary winding connected to isolated outputs. In a non-isolated mode, the two switching bridges are configured to operate in a parallel mode, and power is transferred between the DC bus and the non-isolated outputs. In an isolated mode, the two switching bridges are configured to operate in a full bridge mode, and power is transferred between the DC bus and the isolated outputs through the transformer.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: November 14, 2023
    Inventors: Huibin Zhu, Karen Ming Zhu
  • Multibridge Power Converter With Multiple Outputs
    Publication number: 20210408889
    Abstract: According to one aspect of the present disclosure, there is provided a power converter apparatus that includes at least two switching bridges connected to a Direct Current (DC) bus and both generating pulse-width-modulated (PWM) voltages to non-isolated outputs, and an isolation transformer having a primary winding connected across the outputs of the two switching bridges and a secondary winding connected to isolated outputs. In a non-isolated mode, the two switching bridges are configured to operate in a parallel mode, and power is transferred between the DC bus and the non-isolated outputs. In an isolated mode, the two switching bridges are configured to operate in a full bridge mode, and power is transferred between the DC bus and the isolated outputs through the transformer.
    Type: Application
    Filed: October 16, 2020
    Publication date: December 30, 2021
    Inventors: Huibin Zhu, Karen Ming Zhu