Bypass diodes protect solar cells from the destructive effects of hot spotting. When a portion of a module is shaded by debris, soiling, or structures, those cells stop producing power and act as electrical resistors. A functioning diode routes the current around the obstructed string to prevent damage. Joerg Althaus of Intertek CEA explained in a report why lost bypass diodes in PV modules are a hidden fire risk. Althaus said diode failures can pass standard factory and field inspections, yet create severe overheating when shading occurs, posing a hidden risk. When a bypass diode is physically ...Den vollständigen Artikel lesen ...
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