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In this paper presents a direct power control (DPC) for three-phase matrix converters operating as unified power flow controllers (UPFCs). Matrix converters (MCs) allow the direct ac/ac power conversion without dc energy storage links; therefore, the MC-based UPFC (MC-UPFC) has reduced size and cost, reduced capacitor power losses, together with higher reliability. Theoretical principles of direct power control (DPC) based on sliding mode control methods are established for an MC-UPFC dynamicdoi:10.15623/ijret.2013.0211069 fatcat:ed6zp23rdfff3dtr2cogfoqb6e