Patents by Inventor Caixuan XU

Caixuan XU 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 method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station
    Patent number: 11616369
    Abstract: Provided is a control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station. The control strategy includes: 1) numbering all MMC units connected in parallel in a MMC valve manifold; (2) for a MMC unit using a constant direct-current voltage control manner, calculating a direct-current instruction value of the MMC unit according to a direct-current measurement value; (3) for a MMC unit using a constant active power control manner, calculating an active power instruction value of the MMC unit according to the rated capacity of the MMC unit and a direct-current instruction value of a system rectifier station; (4) for the MMC unit using the constant direct-current voltage control manner, correcting a direct-current voltage instruction value of the MMC unit by using the direct-current instruction value and the direct-current measurement value, and controlling the MMC unit according to the corrected direct-current voltage instruction value.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: March 28, 2023
    Assignees: STATE GRID JIANGSU ELECTRIC POWER CO., LTD., STATE GRID JIANGSU ELECTRIC POWER CO., LTD. ECONOMIC RESEARCH INSTITUTE, STATE GRID JIANGSU ELECTRIC POWER DESIGN CONSULTING INSTITUTE CO., LTD., STATE GRID CORPORATION OF CHINA, STATE GRID JIANGSU ELECTRIC POWER CO., LTD. MARKETING CENTER
    Inventors: Hui Cai, Zhenjian Xie, Zhuyi Peng, Feifei Zhao, Xingning Han, Caixuan Xu, Chengchen Huang, Zheng Xu, Ming Yan, Zheren Zhang, Wanchun Qi, Wenjia Zhang, Wentao Sun, Chen Li, Quanquan Wang, Boliang Liu
  • Process for dehumidifying moist gas mixtures
    Patent number: 11207635
    Abstract: A process and an apparatus for dehumidifying a moist gas mixture are provided. The apparatus for dehumidifying a moist gas mixture can be used and in the process. The absorption medium used in the process and the apparatus is also provided.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: December 28, 2021
    Assignee: Evonik Operations GmbH
    Inventors: Xinming Wang, Caixuan Xu, Rolf Schneider, Matthias Bahlmann, Thomas Kerl
  • PROCESS FOR DEHUMIDIFYING MOIST GAS MIXTURES
    Publication number: 20210362089
    Abstract: A process and an apparatus for dehumidifying a moist gas mixture are provided. The apparatus for dehumidifying a moist gas mixture can be used and in the process. The absorption medium used in the process and the apparatus is also provided.
    Type: Application
    Filed: November 29, 2019
    Publication date: November 25, 2021
    Applicant: Evonik Operations GmbH
    Inventors: Xinming Wang, Caixuan Xu, Rolf Schneider, Matthias Bahlmann, Thomas Kerl
  • CONTROL METHOD FOR A PARALLEL MMC UNIT OF A LCC-MMC HYBRID CASCADE CONVERTER STATION
    Publication number: 20210143754
    Abstract: Provided is a control method for a parallel MMC unit of a LCC-MMC hybrid cascade converter station. The control strategy includes: 1) numbering all MMC units connected in parallel in a MMC valve manifold; (2) for a MMC unit using a constant direct-current voltage control manner, calculating a direct-current instruction value of the MMC unit according to a direct-current measurement value; (3) for a MMC unit using a constant active power control manner, calculating an active power instruction value of the MMC unit according to the rated capacity of the MMC unit and a direct-current instruction value of a system rectifier station; (4) for the MMC unit using the constant direct-current voltage control manner, correcting a direct-current voltage instruction value of the MMC unit by using the direct-current instruction value and the direct-current measurement value, and controlling the MMC unit according to the corrected direct-current voltage instruction value.
    Type: Application
    Filed: October 1, 2020
    Publication date: May 13, 2021
    Inventors: Hui CAI, Zhenjian XIE, Zhuyi PENG, Feifei ZHAO, Xingning HAN, Caixuan XU, Chengchen HUANG, Zheng XU, Ming YAN, Zheren ZHANG, Wanchun QI, Wenjia ZHANG, Wentao SUN, Chen LI, Quanquan WANG, Boliang LIU
  • METHOD FOR MAKING A PYROLYTIC BORON NITRIDE ARTICLE
    Publication number: 20120304762
    Abstract: A method for producing a pyrolytic boron nitride (PBN) article comprises introducing a nitrogen containing gas and a boron containing gas into a heated reactor furnace under temperature and pressure conditions sufficient to form a PBN deposit and pulsing the flow of the reactant gases between an on and an off state. The method provides a multi-layered PBN article that exhibits a relatively weak bonding interface between adjacent PBN layers to allow for the layers to be peeled away from one another in a controlled manner.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 6, 2012
    Inventors: Caixuan XU, Subbanna MANJUNATH, Takayuki TOGAWA