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This paper presents a new control technique applied on a multilevel inverter recently launched, the Packed U-Cells also known as PUC inverter. PUC became the interest of several studies for different applications mainly for the grid connected systems. In this work, Model Predictive Control (MPC) is used to control the grid current and the auxiliary capacitor voltage in the grid connected PUC inverter...
This paper proposes an improved dynamic voltage restorer based on DC energy-storageless direct AC/AC converter. The working principle and non-complementary control commutation strategy are analyzed. The novel predictive control based on a discrete state observer is designed. On the one hand, without the use of energy storage devices like electrolytic capacitor, the proposed dynamic voltage restorer...
Multilevel converters can reach medium-voltage operation, increasing the efficiency in high power applications. Among the existing multilevel converter topologies, modular multilevel converter provides the advantages of high modularity, availability and high power quality. Moreover, the main advantage compared to cascaded multilevel converters is the absence of input transformer; reducing the size,...
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