Patents by Inventor Yanling Zong

Yanling Zong 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).

  • Publication number: 20240243656
    Abstract: A resonant circuit and a control method thereof, the resonant circuit including a plurality of resonant modules connected in parallel. The control method includes: obtaining an output current signal and an output voltage signal according to an output current and an output voltage sampled of the respective resonant module; correspondingly generating, via the respective resonant module, a first control voltage signal through a voltage loop according to a current difference between the output current and an average output current and the output voltage signal, and correspondingly generating a second control voltage signal through a current loop according to the output current signal; selecting to use one of the first or second control voltage signal according to whether the output current reaches the current limit value for controlling a switch frequency of the corresponding resonant module, thereby achieving current-sharing or current-limiting control of the respective resonant module.
    Type: Application
    Filed: January 3, 2024
    Publication date: July 18, 2024
    Inventors: Yingqi ZHANG, Shiyong NI, Yanling ZONG, Linchun LI, Jinfa ZHANG
  • Publication number: 20190356213
    Abstract: The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.
    Type: Application
    Filed: December 24, 2018
    Publication date: November 21, 2019
    Inventors: Hongbao WANG, Yanling ZONG, Liangliang REN, Dezhi JIAO, Jinfa ZHANG
  • Patent number: 10461628
    Abstract: The present disclosure provides a control circuit and a control method, where the control circuit includes: a signal detection unit, a ZCD signal acquisition unit, a signal selection unit, a frequency limiting unit, and a PWM control signal generation unit; where the signal detection unit, the ZCD signal acquisition unit, the signal selection unit, the frequency limiting unit, and the PWM control signal generation unit are connected in cascade. The control circuit and the control method provided in the present disclosure reduce processing delay of a ZCD signal and improve signal processing accuracy of a PFC system.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: October 29, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Hongbao Wang, Yanling Zong, Liangliang Ren, Dezhi Jiao, Jinfa Zhang