Module Characterization

Fraunhofer Center for Silicon Photovoltaics CSP

© Fraunhofer CSP

Mechanical characterization on PV modules

PV modules in operation are subjected to external loads such as wind, snow and temperature changes. These lead to stresses in the module's components and can result in damages and defects. By use of our extensive expertise in mechanics of materials at Fraunhofer CSP, the behaviour of solar modules and their components are systematically investigated.

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High Voltage Stress Test (HVST) and potential induced degradation (PID)

In the last few years degradation of PV modules has increasingly occured at high voltage systems and transformerless inverters. All of these systems showed highly negative cell voltages to ground. This effect is called potential induced degradation (PID). The observed amount of power degradation of PV power stations can exceed 30 percent. With increasing permissible system voltage up to 1,500 V and the development of sites near the equator for the generation of electricity from solar energy, the PID effect is increasingly gaining importance.

Potential induced degradation (PID) on various PV modules [PDF]

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Electroluminescence and Thermography on modules

Information to come soon.

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Performance tests of modules

Information to come soon.

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