  Modeling and comprehensive analysis of the Active Front-End (AFE) rectifier
is addressed in this work. The particular emphasis is on the comparison of two
state feedback control frameworks: state-space and frequency domain. The
equivalence of both frameworks for the AFE case was shown. Moreover, analytical
relations between control gains and system parameters was derived, allowing for
explicit gain scheduling as a function of operating point over the mission
profile. The state observation of grid currents has also been addressed.
Finally, the work shows the example of robustness evaluation in presence of
system variation using the Lyapunov functions approach. The system in nominal
conditions was shown to be robust with respect to $50\%$ AC hardware parameter
variations.
