Methods for detecting PID

In my last post, I mentioned the PID effect, which significantly decreases photovoltaic arrays’ performance. Now, I want to show how PID can be diagnosed using a few different analysis methods. As discussed in my last post on this topic, outdoor electroluminescence analysis is the best way to detect the PID effect. This method lets […]

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Potential-induced degradation (PID) of photovoltaic panels

Potential induced degradation affects many solar power arrays by reducing panel performance more and more over time. Although some types of PID are reversible, others are not, and those are therefore a permanent problem for the affected modules. This article describes the causes of PID, how to detect it, and how to prevent it. All […]

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Outdoor electroluminescence and reverse current thermography

The VDE 0126-23 Standard now specifies a commissioning test procedure for solar systems. Measurement of the no-load voltage, short-circuit current and insulation resistance. There is now a measuring device, the Benning PV-1, which can carry out all of these measurements in a single pass. The measured values are recorded and the documentation supplied to the […]

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pvServe – a service power supply for the photovoltaics industry

The first reverse current testing of solar modules took place some years ago during IEC tests on solar modules. It requires a voltage greater than the module’s no-load voltage to be applied to the module’s terminals. The module then behaves like a circuit with 60 or 72 diodes in series (depending on how many cells […]

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