Patents by Inventor Colin Charnocck DAVIDSON

Colin Charnocck DAVIDSON 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).

  • Publication number: 20170099009
    Abstract: In the field of HVDC power converters there is a need for an improved semiconductor switching assembly which obviates the difficulties associated with main semiconductor switching elements having inherent limitations in their performance. A semiconductor switching assembly is provided, which includes a main semiconductor switching element that includes first and second connection terminals between which an active auxiliary circuit is electrically connected. The auxiliary circuit includes an auxiliary semiconductor switching element and current capture element that are connected in series with one another. The auxiliary semiconductor switching element has a control unit operatively connected therewith. The control unit is configured to switch on the auxiliary semiconductor switching element to divert into the current capture element a reverse recovery current that flows through the main semiconductor switching element while it turns off.
    Type: Application
    Filed: June 9, 2015
    Publication date: April 6, 2017
    Inventors: Colin Charnocck DAVIDSON, Ikenna Bruce EFIKA, David Reginald TRAINER