Dead time and non-linearities compensation for CHB multi-level converters with integrated ESS feeding EV's ultra-fast charging stations

This paper deals with a compensation technique for non-linear behaviour of single phase modular multi-level power converter, feeding electric vehicle fast charging station with split integrated energy storage system. The proposed method calculates the voltage compensation on the basis of the error between the reference and the real currents. It allows highly improving the harmonic content of the grid current in steady-state conditions within a single period of fundamental.