Cl. Chu, A 3-PHASE 4-WIRE UNITY POWER-FACTOR AC DC CONVERTER WITH DUAL DC OUTPUT VOLTAGE CONTROL/, International journal of electronics, 83(5), 1997, pp. 685-702
A three-phase four-wire unity power factor AC/DC converter with dual D
C voltage control is proposed. This converter is able to keep its two
series DC output voltage equal and constant while supplying unbalanced
power. An uninterruptible power supply incorporating such a converter
is able to supply all kinds of loads, including the half wave rectifi
ed load. Experimental results verify that the proposed dual DC voltage
control scheme is feasible.