Self-powered electroluminescence for daylight PV system inspection

Scientists from Spain have developed a daylight electroluminescence method that uses other strings to supply current to the inspected string. It was simulated and then tested in two 50 MW PV plants. Comparative assessment against lab-electroluminescence resulted in acceptable diagnostic performance.A research team from Spain's University of Valladolid has created a novel self-powered daylight electroluminescence (dEL) method for PV system inspections. Usually, dEL requires power sources like generators or bidirectional inverters to inject current during a string inspection. However, the novel ...

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