Patents by Inventor Shaohua Ruan

Shaohua Ruan 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: 9042134
    Abstract: Disclosed is a grid-connected inverter and a method for filtering AC output thereof. The grid-connected inverter includes an AC output filter which includes two or more switchable filtering modules, with the power capacity of each filtering module corresponding to a different output power of the grid-connected inverter; a monitoring module which is used to perform realtime monitoring on voltage and current outputted by the grid-connected inverter; and a control circuit which is used to calculate an output power grade of the grid-connected inverter according to the voltage and the current monitored by the monitoring module and control switching to the filtering module having a corresponding power capacity according to the power grade, the power grade being selected from a plurality of power grades which are divided according to power capacities of the filtering modules.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: May 26, 2015
    Assignees: TBEA SUNOASIS CO., LTD., TBEA XI'AN ELECTRIC TECHNOLOGY CO., LTD.
    Inventors: Weizeng Liu, Shaohua Ruan, Xintao Zhang
  • Publication number: 20130070490
    Abstract: Disclosed is a grid-connected inverter and a method for filtering AC output thereof. The grid-connected inverter comprises an AC output filter which includes two or more switchable filtering modules, power capacity of each filtering modules corresponding to a different output power of the grid-connected inverter; a monitoring module which is used to perform realtime monitoring on voltage and current outputted by the grid-connected inverter; and a control circuit which is used to calculate an output power grade of the grid-connected inverter according to the voltage and the current monitored by the monitoring module and control switching to the filtering module having a corresponding power capacity according to the power grade, the power grade being selected from a plurality of power grades which are divided according to power capacities of the filtering modules.
    Type: Application
    Filed: May 5, 2011
    Publication date: March 21, 2013
    Applicants: TBEA XI'AN ELECTRIC TECHNOLOGY CO., LTD., TBEA SUNOASIS CO., LTD.
    Inventors: Weizeng Liu, Shaohua Ruan, Xintao Zhang
  • Patent number: D893617
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: August 18, 2020
    Assignee: HANGZHOU ZT MODEL CO., LTD
    Inventors: Rui Feng, Shaohua Wang, He Jiang, Yingjun Ruan