The front end three-phase PFC might be implemented in multiple topologies. Mainly it can be distinguished between two-level and three-level which will influence the design and the blocking voltage rating of the semiconductors. Three-level topologies are an appealing solution for engineers seeking high efficiency at low costs. An overview about existing common three-level PFC topologies can be seen in the below graph.
These topologies are aimed for uni-directional charging. For bi-directional charging the three-level SPFC and NPFC are suitable by replacing the boost diodes with switches.
Costs and efficiency have been benchmarked to illuminate the topologies' strengths and weaknesses. Another focus has been put on the comparison between Si and SiC diode
With the flowSPFC, flowNPFC and flowANPFC, Vincotech offers a comprehensive product portfolio for three-level PFC topologies, featuring:
|Housing||ANPFC / 3xANPFC||NPFC / 3xNPFC||SPFC||Application Power*|
|flow 0||Show products||Show products||Show products||Up to 22 kW|
|flowNPFC 0 SiC
|Up to 25 kW|
|flow 1||Show products||Show products||-||Up to 43 kW|
|flowNPFC 1 SiC
|Up to 50 kW|
|flow E2||flowNPFC 1 SiC
|Up to 50 kW|
|flow 2||Show products||-||-||Up to 25 kW|
* Estimation based on a typical charger operation point
With the flowPACK SiC and flowDUAL SiC, Vincotech offers a broad product portfolio for two-level PFC topologies, featuring: