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Method and apparatus to provide power conversion with high power factor

United States Patent

9,660,520
May 23, 2017
View the Complete Patent at the US Patent & Trademark Office
A power converter circuit rectifies a line voltage and applies the rectified voltage to a stack of capacitors. Voltages on the capacitors are coupled to a plurality of regulating converters to be converted to regulated output signals. The regulated output signals are combined and converted to a desired DC output voltage of the power converter. Input currents of the regulating converters are modulated in a manner that enhances the power factor of the power converter.
Perreault; David J. (Andover, MA), Lim; Seungbum (Cambridge, MA), Otten; David M. (Newton, MA)
Massachusetts Institute of Technology (Cambridge, MA)
14/ 758,033
April 8, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with government support under Grant No. DE-AR0000123 awarded by the Department of Energy. The government has certain rights in the invention.