Discrete-Time Dead-Beat Control of a VSC Transmission Scheme Including Voltage and Current Limitations for Wind Farm Connection

This paper presents a discrete-time nonlinear control of a voltage source converter (VSC) transmission system for wind farm connection to electrical network. After introducing discrete-time modeling of a VSC transmission scheme, discrete-time currents (i.e. P and Q) and DC bus voltage controllers synthesis is presented. Both voltage and current limitations are then taken into account through the introduction of voltage and current limitation circles. Control performances are then illustrated by simulation results. More particularly, transient behavior in case of voltage and current limitations is discussed. Finally, some conclusions and perspectives are given