Experiment_4_REMOTEWEAK_SmallSignalModel_NPC_GCC_Multilevel_Inverter_PV [Dataset]

[EN] Experimental results about the control structure and the dynamic modelling of the NPC+GCC transformerless inverter used in single phase Photovoltaic power systems. The high capacitance to ground of the photovoltaic generator leads to undesirable high-leakage currents. Using half-bridge topologies dramatically reduces the leakage to ground, and using a multilevel half-bridge inverters improves the output quality compared with classical inverters. The neutral point clamped + generation control circuit (NPC + GCC) topology is a multilevel single-phase transformerless inverter capable of tracking the maximum power point of two photovoltaic sources at the same time. The Pulse-Width Modulated (PWM) switch model in continuous conduction mode (CCM) has been used to obtain the small-signal model of the two switching converters that make up the inverter. The resulting dynamic model is used to quantify the stability margins of both converters' current and voltage loops.