Ma. Derooij et al., A NOVEL UNITY POWER-FACTOR LOW-EMI UNINTERRUPTIBLE POWER-SUPPLY, IEEE transactions on industry applications, 34(4), 1998, pp. 870-877
This paper investigates a novel uninterruptible power supply (UPS) con
figuration that features low EMI and draws unity power factor without
the addition of a preregulator, A 100-Hz pulsating bus is used in cont
rast to a smoothed de bus. The compound converter structure exhibits h
igh efficiency. A 3.3-kW single-phase experimental converter is evalua
ted.