Test equipment for PV cells, modules, panels, and arrays should be capable of performing the types of measurements that typically characterize such PV components and systems, including short-circuit current testing and open-circuit voltage testing, Additional PV measurement capabilities include solar responsivity or how a PV device responds to different wavelengths of light and how efficiently it can convert light to electricity.
Useful test equipment capabilities include wide I and V measurement ranges, high AC and DC power accuracy, and high resolution. Any PV-based source of electricity will require evaluation of inverter efficiency or the ratio of the inverter’s DC power input to its AC power output. A power analyzer capable of simultaneously measuring DC input power and AC output power can simplify this task.
Where measurements are performed, such as in the R&D lab or production line versus in the field, will help determine the desired form factor of the test equipment. Whereas engineering and production applications are well served by standard rack-mount test units, on-site measurements of PV installations may require portability and high accuracy across wide temperature ranges since PV energy-producing setups and systems can be subjected to extreme environmental conditions. The amount of testing required will depend upon local regulations.
DC Power Supplies
DC Electronic Loads, up to 3kW
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