PWM Control of 3-Phase PFC Vienna Rectifier Derived from an Average Current-based Control of Single-Phase PFC Boost Converter

In this paper a PWM-based control of the 3-phase PFC Vienna rectifier is presented. The converter operation from which small signal model is obtained is presented in detail. Stability assessment using the obtained feedback loop gain is performed based on the suggested controller structure. Finally, simulation results for a 2kWatts converter under different step-load and input voltage variations show the robustness of the converter control presented here.