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Since the demand of energy with high quality and reliable power is growing and temporary faults in the grid are common, the analysis of unbalanced voltage conditions has become increasingly important. Power converters can control the instantaneous active and reactive power and manage them in order to improve the voltage conditions at the point of common coupling. The current reference generation strategies...
The continuous growing of energy market prompt for energy sources every time more distant to energy consumption centres. In this scenario, high voltage DC systems have proved to be the best alternative to transmit power over long distances. Among the different converter topologies used in HVDC systems, the modular multilevel converter provides the highest modularity, reliability, availability and...
Modular multilevel cascaded converter provides high modularity, availability, and high power quality, being specially suited for high voltage DC transmission systems. However, DC voltage balance and circulating currents require a high performance controller which take into account both, the internal dynamics and also the external dynamics like input and output currents. This paper is focused on the...
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