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 transformedto “two” phase by means of a 0.14-pu-rated autotransformer. Twostandard single-phase PFC modules are then employed to processthe “two” phase power to dc output. Split inductors and diodesare employed to limit interaction between the two PFC stages. Dueto cascade operation of two PFC stages, low-frequency (120 Hz)ripple in the dc-link capacitor is cancelled. Detailed analysis andsimulation results are presented. A 220-V 1.5-kVA design examplealong with experimental results is shown.Index Terms—Harmonics, power-factor correction, power quality.
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