SLLA497 September   2020 TMS320F28P550SJ , TMS320F28P559SJ-Q1

 

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3 Power Topologies in AC/DC (PFC)

The individual topologies are classified into passive, hybrid, and active PFC rectifier systems. With the recent advancements in semiconductor technology, active PFCs are widely used in EV charging stations. Depending on the power level, both single-phase as well as three-phase topologies are used in EV charging stations. Single-phase topologies are typically used for power levels less than 3.3 kW and three-phase topologies are used at much higher power levels. In this application report single-phase PFC topologies namely totem pole, interleaved totem pole and Neutral Point Clamped topology are briefly introduced and then we mainly focus on three-phase PFC topologies; namely the two-level PFC, Vienna PFC, Neutral Point Clamped (NPC) 3 level PFC and T-type NPC PFC.