Patents by Inventor YUHANG CUI

YUHANG CUI 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).

  • Control circuit and method for controlling a resonant converter and power inverter comprising the resonant converter and the control circuit
    Patent number: 10374520
    Abstract: The present invention proposes a control circuit and a method of controlling a resonant converter comprising a full-bridge configuration in the following manner: during each half period of a plurality of periods of a resonant current of the resonant converter, starting from an initial state (500) in which a diagonal pair are conductive, turning off (510) a first switch member of the diagonal pair on the basis of the voltage control signal; turning on (520), after the turn-off of the first switch member, a switch member in series connection with the first switch member prior to a zero crossing (E5) of the resonant current; turning off (530), after the turn-off of the first switch member, a second switch member of the diagonal pair prior to the zero crossing (ES); and turning on (540), after the turn-off of the second switch member, a switch member in series connection with the second switch member prior to the zero crossing event of the resonant current.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: August 6, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Bernhard Wagner, Yuhang Cui, Jilong Han
  • CONTROL CIRCUIT AND METHOD FOR CONTROLLING A RESONANT CONVERTER AND POWER INVERTER COMPRISING THE RESONANT CONVERTER AND THE CONTROL CIRCUIT
    Publication number: 20180375436
    Abstract: The present invention proposes a control circuit and a method of controlling a resonant converter comprising a full-bridge configuration in the following manner: during each half period of a plurality of periods of a resonant current of the resonant converter, starting from an initial state (500) in which a diagonal pair are conductive, turning off (510) a first switch member of the diagonal pair on the basis of the voltage control signal; turning on (520), after the turn-off of the first switch member, a switch member in series connection with the first switch member prior to a zero crossing (E5) of the resonant current; turning off (530), after the turn-off of the first switch member, a second switch member of the diagonal pair prior to the zero crossing (ES); and turning on (540), after the turn-off of the second switch member, a switch member in series connection with the second switch member prior to the zero crossing event of the resonant current.
    Type: Application
    Filed: December 16, 2016
    Publication date: December 27, 2018
    Inventors: BERNHARD WAGNER, YUHANG CUI, JILONG HAN