A new three-phase power factor correction (PFC) scheme using two single-phase PFC modules
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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 auto-transformer. 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 (120Hz) ripple in the dc-link capacitor is cancelled. Detailed analysis and simulation results are presented. A 220V, 1.5kVA design example along with experimental results is shown.
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APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181)