Direct control method for matrix converters with input power factor regulation

Abstract

This work presents the design of sliding mode controllers, considering the dynamics of the input filter, for three-phase AC-AC matrix converters, to guarantee input and output sinusoidal waveforms with controllable input power factor. The sliding mode control technique together with space vector modulation is used to ensure that the output voltages and input currents track their references, guaranteeing the desired input power factor of matrix converters, which may be useful in applications operating with unity input power factor, such as AC drives, or applications where fully controllable input power factor is useful, namely static VAR compensators (SVC) or phase shifters. The obtained simulation and experimental results show that the designed controllers, associated with the state-space vector technique, guarantee the direct control of matrix converters output voltages, as well as their input currents.