A New Three-Phase Power-Factor Correction (PFC) Scheme Using Two Single-Phase PFC Modules:Abstract—In this paper, a new three-phase power-factor correction
(PFC) scheme is proposed using two single-phase PFC modules.
In this approach, the “three” phase input is first transformed
to “two” phase by means of a 0.14-pu-rated autotransformer. Two
standard single-phase PFC modules are then employed to process
the “two” phase power to dc output. Split inductors and diodes
are employed to limit interaction between the two PFC stages. Due
to cascade operation of two PFC stages, low-frequency (120 Hz)
ripple in the dc-link capacitor is cancelled. Detailed analysis and
simulation results are presented. A 220-V 1.5-kVA design example
along with experimental results is shown.
Index Terms—Harmonics, power-factor correction, power quality.