Model Predictive Control for Cascaded Flying Capacitor Cell Multilevel Converter

In this paper, a model predictive control to reduce computation is proposed for the cascaded flying capacitor cell multilevel converter. The model predictive control is limited to applying to a multilevel topology because it requires too many predicted values of the control variables to be computed. The proposed control consists of three control steps and operates step by step. There is an advantage that fewer control operation is required since the predicted value of the control variable is obtained by using the terminal voltage level. The proposed control performs input current control, DC output voltage control, and flying capacitor voltage control. The performance of the proposed model predictive control is validated by simulating CFCC multilevel converter with two FC cells.