Patent ID: 6950322
Filing Date: 2005-09-27
Classification: H02M

Abstract:
1. A regulated AC to DC converter for converting AC power into regulated DC power, comprising: an input transformer for receiving and phase-shifting 3-phase AC power and for dividing the phase-shifted AC power into 2 channels; a set of 6-pulse rectifiers in each of said 2 channels, coupled to said transformer, for rectifying the phase-shifted AC power; a high frequency switching converter in each of said 2 channels, respectively coupled to said set of rectifiers, for chopping the rectified power; a step-down transformer in each of said 2 channels, respectively coupled to said switching converter, for isolating and stepping down the chopped power; an output rectifier in each of said 2 channels, respectively coupled to said step-down transformer, for further rectifying the stepped down power; and a filter, coupled to said output rectifiers, for filtering the further rectified power to produce a low ripple DC power that is regulated by controlling each said high frequency switching converter.