
17-6 Power Electronics and Motor Drives
17.2.2 PFC Stages with Inner Control Current Loop
Input current control is intended to guarantee resistor emulator behavior—the inner current loop is com-
bined with an outer loop that consists of either an output voltage control with output power limit or an
output power control with output voltage limit. Depending on the power conversion rate, commercial
solutions can be found for the boundary between DCM and CCM as well as CCM operations [VSSJ07,
PB09]. Current controllers make either the peak or average current over a switching period follow the
sinusoidal utility voltage while line period current amp ...