Power converters for multiple input power supplies

Details Power converters for multiple input power supplies Power converters for multiple input power supplies

1998-05-29

2000-07-11

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 21, 320 13, H02M 324, H02M 100, H01M 1046

Patent

active

060882506

ABSTRACT:
An improved power converter employs two conventional charging and discharging switches operating in a complimentary mode and driven by a switch driver controlled by a power factor correction controller. The power converter is firstly improved with a blocking diode for blocking cross coupled short circuit paths to enable multiple converters to drive respective primary windings of an output isolation transformer, and is further modified with an absorption capacitor for providing a discharge path for a switching capacitor connected across the discharging switch so as to enable zero voltage switching of the discharging switch while employing conventional power factor correction, over voltage protection and current limiting. A plurality of improved power converters can be connected between respective input power sources and respective primary windings of the transformer with each converter independently providing power factor correction without cross coupling short circuit paths.

REFERENCES:
patent: 5751133 (1998-05-01), Sato et al.
patent: 5761057 (1998-06-01), Munchenberger

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