| Abstract |
This paper presents a direct model predictive control algorithm for a three-level neutral point clampedconverter connected to the grid via an LCL filter. The proposed controller simultaneously controlsthe grid and converter currents as well as the filter capacitor voltage, while meeting the relevant gridstandards. Moreover, output constraints are included to ensure operation of the system within its safeoperating limits. This is achieved by formulating the direct MPC problem as a constrained integer least-squares optimization problem, wherein the output constraints are mapped into input constraints. Thepresented results verify the effectiveness of the proposed method. |
