Patents by Inventor Yuanqian Dong

Yuanqian Dong 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).

  • Multi-level inverter
    Patent number: 10833601
    Abstract: According to one aspect, embodiments of the invention provide an inverter comprising an input, an output, a plurality of DC busses, a mid-point bus, an LC filter, a common node coupled to the LC filter, a plurality of switches coupled to the plurality of DC busses and the common node, a bidirectional switch coupled between the mid-point bus and the common node, and a controller configured to operate the plurality of switches and the bidirectional switch in a first mode of operation to generate a voltage at the common node at a first positive DC voltage level, in a second mode of operation to generate the voltage at a second positive DC voltage level, in a third mode of operation to generate the voltage at a first negative DC voltage level, and in a fourth mode of operation to generate the voltage at a second negative DC voltage level.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: November 10, 2020
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Jingwen Xie, Hairong Zhang, Yuanqian Dong, Zhiyan Liu
  • QUASI FIVE-LEVEL INVERTER
    Publication number: 20200021203
    Abstract: According to one aspect, embodiments of the invention provide an inverter comprising an input, an output, a plurality of DC busses, a mid-point bus, an LC filter, a common node coupled to the LC filter, a plurality of switches coupled to the plurality of DC busses and the common node, a bidirectional switch coupled between the mid-point bus and the common node, and a controller configured to operate the plurality of switches and the bidirectional switch in a first mode of operation to generate a voltage at the common node at a first positive DC voltage level, in a second mode of operation to generate the voltage at a second positive DC voltage level, in a third mode of operation to generate the voltage at a first negative DC voltage level, and in a fourth mode of operation to generate the voltage at a second negative DC voltage level.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 16, 2020
    Inventors: Jingwen Xie, Hairong Zhang, Yuanqian Dong, Zhiyan Liu