| Abstract |
This paper studies the inductor design for three-phase three-wire and four-wire power factor correction converter (PFC). Designing the efficient inductor for this converter (regardless of connecting the midpoint to the ground) requires a comprehensive knowledge of the inductor current and voltage behavior. Basically, this paper investigates how three and four wire PFC influence the inductor design in terms of size, losses, and overall efficiency of the converter. Since, the connection of the dc link midpoint to the ground changes the inductor current behavior from the three-wire counterpart. In this paper, the inductor behavior for both three-wire and four-wire PFC are analyzed. The analyses for two configurations are compared with respect to the single phase equivalent circuit, harmonic spectrum, high frequency ac copper losses, and core loss. Finally, two inductors are designed for 3 and 4 wire 5 kW PFC experimental setup and the experimental results show a good agreement with the analyses. |
