Abstract:This paper proposes a modified cascaded neutral-point-clamped grid-connected inverter (MCNPC-GCI) to achieve a wide operational range and high European efficiency in the photovoltaic generation system. Two bidirectional thyristors are added into the standard single-phase cascaded NPC inverter to respectively connect the positive and negative poles of the two NPC inverters to achieve the transformation between the cascaded NPC inverter and the equivalent single NPC inverter. The losses and grid current total ha… Show more
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