RT Journal Article T1 A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters A1 Monteiro, Joaquim A1 Pinto, Sónia A1 Delgado Martín, Aránzazu A1 Fernando Silva, José AB This paper proposes a Direct Matrix Converter operating as a Unified Power Flow Controller(DMC-UPFC) with an advanced control method for UPFC, based on the Lyapunov direct method,presenting good results in power quality assessment. This control method is used for real-timecalculation of the appropriate matrix switching state, determining which switching state should beapplied in the following sampling period. The control strategy takes into account active and reactivepower flow references to choose the vector converter closest to the optimum. Theoretical principlesfor this new real-time vector modulation and control applied to the DMC-UPFC with input filterare established. The method needs DMC-UPFC dynamic equations to be solved just once in eachcontrol cycle, to find the required optimum vector, in contrast to similar control methods that need27 vector estimations per control cycle. The designed controller’s performance was evaluated usingMatlab/Simulink software. Controllers were also implemented using a digital signal processing (DSP)system and matrix hardware. Simulation and experimental results show decoupled transmissionline active (P) and reactive (Q) power control with zero theoretical error tracking and fast response.Output currents and voltages show small ripple and low harmonic content. PB MDPI SN 1996-1073 YR 2017 FD 2017-06 LK http://hdl.handle.net/10272/16071 UL http://hdl.handle.net/10272/16071 LA eng NO Joaquim Monteiro, Sónia Pinto, Aranzazu Delgado Martin, José Fernando Silva. A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters. Energies 2017, 10(6), 779; EISSN 1996-1073, DOI https://doi.org/10.3390/en10060779 NO This work was supported in part by national funds through Fundacao para a Ciencia e Tecnologia (FCT) with reference UID/CEC/50021/2013. DS Repositorio Institucional de la Universidad de Huelva RD 28 may 2026