A research team from Japan's Ritsumeikan University has investigated hotspot mirroring in commercial 120-half-cell silicon heterojunction (HJT) PV modules under partial shading conditions and has identified the electrical mechanisms that drive the phenomenon and developed a circuit-level model to predict hotspot formation in affected cells. Hotspot mirroring occurs in half-cell PV modules when partial shading triggers a bypass diode, causing an unshaded cell in the parallel mirror substring to enter reverse bias. Due to current mismatch, the cell can experience localized overheating similar to ...Den vollständigen Artikel lesen ...
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