Patents by Inventor Kit Po Wong

Kit Po Wong 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).

  • Square-wave modulated voltage dip restorer
    Publication number: 20080315684
    Abstract: The present invention relates a dynamic voltage restorer (DVR) system and methods for addressing voltage dips. The instant DVR incorporates high frequency technology, such as a high frequency transformer, to generate a square wave voltage from a storage device, such square wave being modulated prior to being delivered to a load. The generation of the square wave and modulation thereto creates a voltage that reacts fast to voltage dips, while addressing wide ranging harmonics usually present in square waves.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Eric Ka Wai Cheng, Siu Lau Ho, Kit Po Wong