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Potential-induced degradation of bifacial PV modules incorporating PERC+ technology

Many of the bifacial modules now offered by PV manufacturers employing bifacial passivated emitter and rear cell (PERC+) technology, making them vulnerable to rear-side potential-induced degradation, in addition to the conventional front-side shunting type (PID-s). Kai Sporleder, Volker Naumann, Stephan Großer, Marko Turek and Christian Hagendorf of the Fraunhofer Centre for Silicon Photovoltaics report on new testing methods designed to quantify the expected power losses of bifacial PERC+ modules in the field

Increase of PID susceptibility of PV modules under enhanced environmental stress

Potential-induced degradation (PID) is still one of the main reasons for unpredictable power losses in PV power plants. Volker Naumann, Otwin Breitenstein, Klemens Ilse, Matthias Pander, Kai Sporleder and Christian Hagendorf of Fraunhofer CSP examine how the PID susceptibility of PV modules is influenced by environmental stress. It is found that PID may develop in originally PID-resistant modules after a period of one to three years of unsuspicious operation, depending on climatic conditions

PV Tech Power 22 available now to download

Hybridisation, India, Turkey, floating solar and bifacial potential all take centre stage in the latest volume of PV Tech Power, available now to download free of charge.

Is LeTID degradation in PERC cells another degradation crisis even worse than PID?

When we visit conferences and industrial players, we are very often surprised at how many responsible scientists for PERC production have never heard about the severe degradation effects that PERC devices can show – in particular when talking about LeTID (Light and elevated Temperature Induced Degradation) alias Carrier Induced Degradation (CID).

Polyolefin elastomeric encapsulant from RenewSys protects against PID

India-based PV module and materials specialist RenewSys has has become the first Indian company to receive UL approval and commercialize its Polyolefin Elastomeric (POE) encapsulant. ‘CONSERV E 360 (POE)’, has been specially developed to combine the advantages of TPO as well to provide an effective solution to Potential Induced Degradation (PID).

JinkoSolar pushes bar on anti-PID testing

Leading ‘Silicon Module Super League’ (SMSL) member JinkoSolar has raised its Potential Induced Degradation (PID) resistance test metrics for its standard 1,000V and its 1,500V solar modules, using an extended IEC62804 standard.

SPONSORED: How Pidbull plans to keep PID on a short leash

After experiencing their own problems with potential induced degradation (PID), Belgium-based Edison Energy took matters into its own hands and developed the Pidbull solution in partnership with imec. Now it sells Pidbull to anyone experiencing issues with PID. As managing director Davy Verheyden explains, it is a problem solar asset owners cannot afford to ignore.