Patents by Inventor De-Gang Yi

De-Gang Yi 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).

  • Three-level AC generating circuit and control method thereof
    Patent number: 7706163
    Abstract: The present invention provides a three-level ac generating circuit and the control method thereof. The three-level ac generating circuit includes a three-level boosting circuit connected to an input source and including a positive boosting portion and a negative boosting portion; and a three-level inverting circuit connected to the three-level boosting circuit and including a positive inverting portion and a negative inverting portion, wherein while the input source is a relative low voltage, the relatively low voltage is boosted via the three-level boosting circuit, inverted and output via the three-level inverting circuit; while the input source is a relatively high voltage, the relatively high voltage is inverted and output via the three-level inverting circuit and wherein the output of the three-level ac generating circuit is power grid.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: April 27, 2010
    Assignee: Delta Electronics, Inc.
    Inventors: Jing-Tao Tan, Qiu-Hua Zhu, Chang-Zan Ma, De-Gang Yi, Wen-Yin Tsai, Jian-Ping Ying
  • THREE-LEVEL AC GENERATING CIRCUIT AND CONTROL METHOD THEREOF
    Publication number: 20080112200
    Abstract: The present invention provides a three-level ac generating circuit and the control method thereof. The three-level ac generating circuit includes a three-level boosting circuit connected to an input source and including a positive boosting portion and a negative boosting portion; and a three-level inverting circuit connected to the three-level boosting circuit and including a positive inverting portion and a negative inverting portion, wherein while the input source is a relative low voltage, the relatively low voltage is boosted via the three-level boosting circuit, inverted and output via the three-level inverting circuit; while the input source is a relatively high voltage, the relatively high voltage is inverted and output via the three-level inverting circuit and wherein the output of the three-level ac generating circuit is power grid.
    Type: Application
    Filed: August 28, 2007
    Publication date: May 15, 2008
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Jing-Tao TAN, Qiu-Hua ZHU, Chang-Zan MA, De-Gang YI, Wen-Yin TSAI, Jian-Ping YING