Researchers at Egypt’s South Valley University have developed a novel control strategy to deal with partial shading in PV systems. The new approach uses a multi-string PV system with a converter control strategy that utilizes a direct duty cycle to track the maximum power point (MPP) under shade.
“This study proposes a reconfiguration of the PV system to suppress the negative impact of partial shading on the PV-system performance by dividing the PV system into multiple parallel strings,” the scientists explained. “In this work, the proposed system comprises four strings, with each string comprising three paralleled sub-strings.”
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