Measurement accuracy for PV modules

Reliable returns for solar power plants can only be determined by high-precision performance measurements on photovoltaic (PV) modules. The performance characteristics of PV modules are tested in TÜV Rheinland’s accredited laboratories, for example on the basis of a statistically relevant sample.

The test result decides whether the contract is fulfilled or the delivery prices are to be negotiated. The lower the uncertainty of measurement in the laboratory, the more accurately the yield can be calculated and the lower the risk of poor yields. Tolerances are also a necessary component of performance specifications in international tenders. The reduction of the measurement uncertainty for the power rating of solar modules requires in-depth technical know-how, high-quality and regularly calibrated equipment as well as an adjustment of many individual adjusting screws. For example, regular testing of the lighting properties of the sun simulators used in the laboratory is an important quality assurance measure.

Contact Nicole Krzemien, TUV Rheinland,

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Source: EE plublishers

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