Tolerant Sequential Model Predictive Voltage Control for the Neutral-Point Clamped Three-Level Three-Phase Inverters

A simple strategy called tolerant sequential model predictive voltage control (TSMPVC) for the netural-point clamped three-level three-phase inverters is proposed. Different from the traditional model predictive control, the double-hierarchy cost function is used in this strategy. Becasuse of this, the adjustment of weighting factors is avoided and the candidate voltage vectors can be dynamically selected according to the preset tolerance. Finally, the simulation results are given to validate good performance of this strategy.