Fixed Switching Frequency Model Predictive Current Control for Grid-Connected Inverter with Improved Dynamic and Steady State Performance

Model Predictive Control (MPC) techniques are widely used in grid connected inverter applications because of their fast dynamics and easy implementation. However, the conventional MPC has inherent drawbacks computational complexity, average steady-state error, selection optimum switching vector, variable frequency and, laborious weighting factor selection. In this work, a new controller is proposed based on predictive control for three-phase two-level grid-connected with inductor-capacitor-inductor filter. The performs fast-tracking corresponding reference current negligible error. constant achieved that makes spectrum better resulting simple filter design. harmonic distortion well within limits as per relevant codes. efficacy verified different case studies, including step change current, disturbance, load change. direct Lyapunov approach to guarantee stability controller. tested using simulation studies corroborated experimental studies.