Optimized Predictive Control and Equalization of Zero-States for a 27-level Cascade Asymmetric Multilevel Converter

This paper presents an improved predictive control for a 27-level asymmetric multilevel converter oriented to the injection of photovoltaic energy into the electrical grid. The improvement considers the reduction of commutations in the high power cell of the converter and the optimal of its zero states for an equitable distribution of conduction losses in the semiconductors devices. Simulations are carried out in order to prove the properness of the proposed control scheme.