German company MBJ Solutions offers two new characterization tool platforms for field testing PV modules: Mini Lab and Mobile Lab 5.0.
The well-known mobile equipment Mobile Lab 5.0 for on-site module measurement has undergone a face lift and is now more compact while keeping all the high-quality measurements available in the previous versions. A TÜV certified A+A+A+ LED sun simulator according to IEC 606904-9 Ed.3, a high- resolution electroluminescence tester with up to 30 MPixel resolution, an electrical connection test, an innovative diode test and a Hipot & ground bond test maintain the previous high level of inspection accuracy. The results are saved on the system's laptop and can be exported to a PDF report by the software. The Mobile Lab 5.0 has been redesigned to be future-proof, with a larger active area of up to 1,400 x 2,700 mm to handle larger module formats. The system is more integrated by combining sunsimulator and electroluminescence tester in one system, and the setup can easily be integrated in a trailer. On special request, the company says it can also assist with such installation. It can also be placed as a standalone lab system in a container or on-site housing.
The MBJ Mini Lab has the same components as the Mobile Lab 5.0, including the A+A+A+ LED solar simulator and the EL tester, but it is designed more for stationary use onsite. The system, which is integrated inside a container, is transportable and thus excellent for initial module testing during the construction of large solar parks. However, as a stationary system, the system is also ideally suited for laboratories and universities. The vertical form makes it easier to handle the modules. After measuring the power, the modules can be easily pushed to the EL system using a roller conveyor. MBJ also offers a comprehensive characterization software suite along with its products.
MBJ Solutions has developed new LED light source with 21 different LED types for a better spectral match and a more accurate power measurement. The advanced spectrum matches the solar spectrum with a spectral deviation of less than 24% and offers a spectral coverage more than 98%. This is attained by notable improvements in the IR and UV range of the spectrum as well as also in visible range. This advanced light source is not only integrated into the above 2 latest lab tools of the company but also sun simulator designed to be used in module production lines. The tool of the company is suitable for the I/V-curve measurement of framed, frameless glass-glass or glass-foil modules and bifacial modules. With the stepwise measurement function, the system enables high accuracy characterization of high capacitive modules such as the one based on HJT. The sun simulator is further integrated with an additional Hipot and ground bond test for framed modules. Operator review station and a MES SEGS GEM interface are additional features of the tools that facilitate a smooth module production, according to the company.