Patents by Inventor Rongyuan Li

Rongyuan Li 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: 10884034
    Abstract: According to the invention, a current measurement circuit for providing a measurement signal for a controller for controlling a switching of power switches of a power converter comprises a first current sensing circuit for sensing a first bidirectional current representative of a current through a first power switch of the power converter. The first current sensing circuit is being adapted to provide a first sensing signal indicative of the first bidirectional current. The current measurement circuit further comprises a second current sensing circuit for sensing a second bidirectional current representative of a current through a second power switch of the power converter. The second current sensing circuit is adapted to provide a second sensing signal indicative of the second bidirectional current.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: January 5, 2021
    Assignee: DELTA ELECTRONICS (THAILAND) PUBLIC CO., LTD.
    Inventors: Robert Pohlmann, Frank Schafmeister, Rongyuan Li
  • Publication number: 20190146014
    Abstract: According to the invention, a current measurement circuit for providing a measurement signal for a controller for controlling a switching of power switches of a power converter comprises a first current sensing circuit for sensing a first bidirectional current representative of a current through a first power switch of the power converter. The first current sensing circuit is being adapted to provide a first sensing signal indicative of the first bidirectional current. The current measurement circuit further comprises a second current sensing circuit for sensing a second bidirectional current representative of a current through a second power switch of the power converter. The second current sensing circuit is adapted to provide a second sensing signal indicative of the second bidirectional current.
    Type: Application
    Filed: November 6, 2018
    Publication date: May 16, 2019
    Applicant: Delta Electronics (Thailand) Public Co., Ltd.
    Inventors: Robert POHLMANN, Frank Schafmeister, Rongyuan Li
  • Patent number: 10083791
    Abstract: In an integrated magnetic component for a switched mode power converter, comprising two magnetic cores forming an 8-shaped core structure and at least two first electric winding wires, wherein at least one magnetic core is an E-core, at least one of the first electric winding wires is wound on a flange of the E-core.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: September 25, 2018
    Assignee: DET INTERNATIONAL HOLDING LIMITED
    Inventors: Hugues Douglas Njiende T., Frank Schafmeister, Rongyuan Li, Peter Ide
  • Publication number: 20130343091
    Abstract: In an integrated magnetic component for a switched mode power converter, comprising two magnetic cores forming an 8-shaped core structure and at least two first electric winding wires, wherein at least one magnetic core is an E-core, at least one of the first electric winding wires is wound on a flange of the E-core.
    Type: Application
    Filed: June 21, 2013
    Publication date: December 26, 2013
    Inventors: Hugues Douglas NJIENDE T., Frank SCHAFMEISTER, Rongyuan LI, Peter IDE
  • Publication number: 20090302932
    Abstract: The invention relates to a powerful 3-point inverter that is triggered by a pulse width modulator (5). The generated inverter voltage (Upwm) is used as an input signal for the LLCC bandpass filter (8) comprising a parallel inductor (Lp) that is arranged parallel to the ultrasonic device and a series resonant circuit (6) containing at least one series inductor (L5) and at least one series capacitor (C5). The LLCC filter additionally comprises the transformer (T) to isolate the potential while also comprising a cable if the ultrasonic actuators are placed at a certain distance such that a low-harmonic, broadband actuator voltage can be generated. The filter utilizes the capacity of the ultrasonic actuator (Cp), the capacity of the cable if a connecting cable is required, and the leakage inductance of the transformer.
    Type: Application
    Filed: April 30, 2007
    Publication date: December 10, 2009
    Applicant: UNIVERSITAT PADERBORN
    Inventors: Norbert Fröhleke, Christopher Kauczor, Rongyuan Li