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Effective switching frequency multiplier inverter

United States Patent

August 7, 2007
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A switching frequency multiplier inverter for low inductance machines that uses parallel connection of switches and each switch is independently controlled according to a pulse width modulation scheme. The effective switching frequency is multiplied by the number of switches connected in parallel while each individual switch operates within its limit of switching frequency. This technique can also be used for other power converters such as DC/DC, AC/DC converters.
Su; Gui-Jia (Oak Ridge, TN), Peng; Fang Z. (Okemos, MI)
UT-Battelle, LLC (
11/ 173,344
July 1, 2005
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with United States Government support under Contract No. DE-AC05-00OR22725 between the United States Department of Energy and U. T. Battelle, LLC. The United States Government has certain rights in this invention.