Solar cell exposure test

Why do we test solar panels?

The overriding objective for testing PV products is to enhance the durability, longevity, and performance of photovoltaic modules and solar panels. When placed in service these products are exposed to searing heat, sub zero freezing cold, and drenching high humidity.

What is a solar cell sample undergoing a combined ultraviolet radiation exposure test?

Solar cell samples undergoing combined ultraviolet radiation exposure tests (VUV and NUV). Full solar spectrum from NUV through short wavelength IR. Filters included to better match the AM0 spectrum Provides strong NUV radiation without heating the sample (IR wavelengths are filtered-out).

Can solar cells be tested in a space environment?

It is common to combine sources on a single vacuum system to achieve a UV environment that is close to on-orbit conditions. Fig. 1 shows a typical test setup in which solar cell samples are being exposed simultaneously to NUV and VUV radiation. III. TEST CAPABILITIES MSFC space environment test capabilities are far ranging.

Why do spacecraft need to test PV cells?

For spacecraft operating in environments subjected to high energy electron and proton radiation, the degradation of PV cells translates to reduced power levels over the mission lifetime. Testing PV cells, and PV array coupons, is therefore important to determine End-of-Life (EOL) power margins.

Why is testing PV cells important?

Testing PV cells, and PV array coupons, is therefore important to determine End-of-Life (EOL) power margins. The charged particle radiation facility at MSFC can be used to qualify PV array systems according to accepted standards or to simply gauge the susceptibility of a new array system to damage as a result of radiation.

What temperature should a solar test chamber be?

IEC and UL solar test specifi cations call for test condi- tions as low as -40°C. It is essential the chamber be capable of providing substantial capacity at these low temperatures. To accomplish this, it is advantageous to specify a chamber that uses a cascade refrigera- tion system.