AC-AC converter for unbalanced supply

This paper is aimed for presenting the analysis of ac-ac converters taken into account unbalanced conditions. Analytical expressions for the output voltage and currents are presented. The major aim of the followed strategy is to control the Parkpsilas vector of the output-voltage, and to control the phase between the input-voltage and the input-current. This allows: (a) to have balanced output-voltages and currents, despite the unbalanced input-voltages; (b) to obtain output-voltages and input-currents with acceptable harmonic content; (c) to control amplitudes and frequency of the output-voltages. Simulation results are exhibited showing the propositionpsilas applicability.