Design of a Linear Time-Varying Model Predictive Control Energy Regulator for Grid-Tied VSCs

This article presents an energy regulator based on a Model Predictive Control (MPC) algorithm for Voltage Source Converter (VSC). The MPC is formulated to optimise the converter performance according weights defined in objective function that trades off additional features, such as current harmonic distortion, reactive power tracking and DC bus voltage oscillation. Differently from most approaches found research literature, proposed here considers coupling dynamics between AC sides of VSC. study focused example case single-phase VSC, which nonlinear relationship its sustained double-line frequency disturbance bus. To reduce burden MPC, controller benefit slow system. Thus, cascaded structure typically used control VSCs kept set at reduced sampling while relies fast inner controller. computational further by using linear time-varying approximation. presented detail experimental validation showing provided.