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This paper deals with a newly conceived combine control topology. Dead-Beat and Repetitive controllers are proposed to operate jointly in 4-leg VSI for stand-alone applications. In such mode of operation, dedicated controller has to regulate the inverter output voltages, which are measured at the output of the power filter. Each control topology exhibits some specific features. Dead-Beat can rapidly...
In this paper, modularity concept using standard three-leg converters is addressed. Three-phase cascade converters composed by standard three-leg converters are investigated. They are composed of three, nine, twenty-one or n three-leg converters. It permits to reduce levels of currents and voltages on switches compared to conventional three-phase module or cascaded H-bridge converter. Other advantages...
Photovoltaic (PV) plants are designed at higher voltage and lower current operation in order to reduce the overall system installation cost. Multiple PV modules connected in series are prone to shading problems which leads to loss of energy harvested. PV inverters without a boost stage are more efficient, by removing the additional power stage, but are prone to energy harvesting loss when the array...
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