单相单级并网光伏级联H桥逆变器的模块功率平衡机制

This article presents a grid support-based module power balancing strategy for a grid-connected photovoltaic (PV) system fed with a modular cascaded H-bridge inverter. Power imbalance occurs in the PV system because of partial shading, aging effect, damage, and dusting of panels, etc., and results in overmodulation of the H-bridge modules (HBM). Overmodulation of HBM increases the distortion in gr...