The series inductance interval, a new family of single-stage PFC converters

In low power single-phase power supplies, single-stage AC/DC converters allow meeting low frequency harmonic regulations such as EN 61000-3-2 and they result a cheaper and simpler solution than the two stages approach. The series inductance interval (SII) gives its name to a new family of single-stage power factor correction (PFC) converters which have been developed to obtain three features: a storage capacitor voltage below the peak value of line voltage, low variation of this voltage with line and load changes, and input current harmonics lower than the EN 61000-3-2 Class D limits for the full load power range. This paper present the principle of operation of the SII converters besides the first experimental results.

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