Patents by Inventor Xiaobo DUAN

Xiaobo DUAN 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).

  • Anti-islanding method for distributed generator in direct current distribution grid and anti-islanding device therefor
    Patent number: 9923367
    Abstract: Provided are an anti-islanding method for a distributed generator in a direct current distribution grid and an anti-islanding device therefor. The method includes: feeding an alternating voltage component into an output end of the AC/DC interface transverter, a frequency of the alternating voltage component being less than the power frequency; sampling a first voltage signal of an output end of the DC/DC transverter; extracting a first effective value of an alternating signal included in the first voltage signal; comparing the first effective value with a first preset voltage; and controlling the distributed generator to stop operation, in a case that it is determined that the first effective value is less than the first preset voltage, which indicates that islanding occurs for the distributed generator.
    Type: Grant
    Filed: September 27, 2015
    Date of Patent: March 20, 2018
    Assignees: State Grid Heibei Electic Power Research Institute, Hebei Electric Power Commissioning Institute
    Inventors: Wenping Hu, Jie Guo, Lei Wang, Xiaobo Duan
  • ANTI-ISLANDING METHOD FOR DISTRIBUTED GENERATOR IN DIRECT CURRENT DISTRIBUTION GRID AND ANTI-ISLANDING DEVICE THEREFOR
    Publication number: 20160285263
    Abstract: Provided are an anti-islanding method for a distributed generator in a direct current distribution grid and an anti-islanding device therefor. The method includes: feeding an alternating voltage component into an output end of the AC/DC interface transverter, a frequency of the alternating voltage component being less than the power frequency; sampling a first voltage signal of an output end of the DC/DC transverter; extracting a first effective value of an alternating signal included in the first voltage signal; comparing the first effective value with a first preset voltage; and controlling the distributed generator to stop operation, in a case that it is determined that the first effective value is less than the first preset voltage, which indicates that islanding occurs for the distributed generator.
    Type: Application
    Filed: September 27, 2015
    Publication date: September 29, 2016
    Inventors: Wenping HU, Jie GUO, Lei WANG, Xiaobo DUAN
  • COMPOSITIONS AND METHODS FOR THE DIAGNOSIS AND PROGNOSIS OF LUNG CANCER
    Publication number: 20160060329
    Abstract: The present invention relates to methods and compositions for the detection of lung cancer. More particularly, the present invention provides monoclonal antibodies for the detection of lung cancer.
    Type: Application
    Filed: July 28, 2015
    Publication date: March 3, 2016
    Inventors: Donald SIN, Ayumu TAGUCHI, Stephen LAM, Samir HANASH, Xiaobo DUAN, Carl Martin TAMMEMAGI, Heidi Jo AUMAN, Frederica PERERA, Brad NELSON