Fast trajectory tracking based on flatness control for a high voltage AC-DC-AC power system

The main objective is to design a fast trajectory tracking control for a complete high voltage DC (HVDC) power system connecting wind generators to an AC grid which also incorporates conventional converters. For such nonlinear dynamics an original flatness-based feedback is derived which enables the controlled shifting from one to another steady state without inducing any appreciable transient. Simulation results are presented which well confirm the predicted behaviour.