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PVMD Delft University of Technology Learning objectives 1. PV - PowerPoint PPT Presentation

Aug 14, 2023 •548 likes •635 views

Reliability Testing 3 Olindo Isabella PVMD Delft University of Technology Learning objectives 1. PV module design 2. Electrical properties 3. Temperature effects 4. Mounting issues 5. Reliability and I-V tests 1. Reliability tests

  1. Reliability Testing 3 Olindo Isabella PVMD Delft University of Technology

  2. Learning objectives 1. PV module design 2. Electrical properties 3. Temperature effects 4. Mounting issues 5. Reliability and I-V tests 1. Reliability tests Mechanical load and hail test • Potential induced degradation test • UV test • Electrical insulation (hi-pot) and wet leakage current • 2. Solar simulator standard

  3. Mechanical load and hail test Mechanical load test • Simulate stress from snow, wind and hail • 2400 Pa Hail test 25 mm • 80 km/h • Robustness of termination

  4. Potential induced degradation (PID) Large voltage potential • • Movement of ions • Corrosion and power loss PID can be mitigated by: Material choice • Galvanic separation •

  5. UV test Exposure to ultra-violet • • Degrade adhesion • Discolouring of encapsulant material

  6. Electrical insulation (hi-pot) and wet leakage current Electrical safety tests • • Electrical shock hazard • Insulating resistance > 40 MΩ for every square meter

  7. Recap Age of 85% of actual global Field failures from installed PV capacity measurements Years 0 5 5 10 15 20 25 Duration of lab tests Reproduced from: “IEC 61215: What it is and isn’t", John Wohlgemuth, NREL , 2012.

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