Patents by Inventor Nancy Y. Sun

Nancy Y. Sun 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 and system for single stage battery charging
    Patent number: 11539231
    Abstract: Aspects of the present disclosure involve a system and method for providing a boosted voltage using a single stage dual active bridge converter. In one embodiment, the single stage dual active bridge converter is introduced for high voltage charging using phase shift and frequency control. Phase shift and frequency control can be implemented on duty cycled switches and pulse width modulated switches in order to achieve a desired output voltage. In another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a single-phase system that provides a voltage for charging a high voltage system. In yet another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a three-phase system that provides a voltage for charging a high voltage system.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: December 27, 2022
    Inventors: Ashish K. Sahoo, Poornima Mazumdar, Nancy Y. Sun, Zaka Ullah Zahid, Dong Young Lee
  • Method and system for single stage battery charging
    Patent number: 10389166
    Abstract: Aspects of the present disclosure involve a system and method for providing a boosted voltage using a single stage dual active bridge converter. In one embodiment, the single stage dual active bridge converter is introduced for high voltage charging using phase shift and frequency control. Phase shift and frequency control can be implemented on duty cycled switches and pulse width modulated switches in order to achieve a desired output voltage. In another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a single-phase system that provides a voltage for charging a high voltage system. In yet another embodiment, the phase shift and frequency controlled single stage dual active bridge converter is replicated in modular form to provide a three-phase system that provides a voltage for charging a high voltage system.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: August 20, 2019
    Inventors: Ashish K. Sahoo, Poornima Mazumdar, Nancy Y. Sun, Zaka Ullah Zahid, Dong Young Lee