Electroluminescence Test Solar Panel

Solar cell inspection by machine vision with ingaas short wave infrared swir cameras reveals voids in silicon boules before slicing them into wafers to produce mono crystalline solar cells.

Electroluminescence test solar panel. Just like ben q and scheuten solar solar panels these panels are subjected to efficiency losses due to potential induced degradation. The panels are installed in a defined test plane precisely north facing with 30 degree tilt and the temperature of each panel is logged with each measurement. In the case of the assistance the same machinery increases the efficiency of the analyses performed by the staff. Ilumen performed an electroluminescence el test on some monocrystalline scheuten solar p6 60i30 solar panels of 230wp which were put in operation 5 years ago.

Elcd test electroluminescence crack detection test. El tester is used to test the solar modules defection like cracks debris empty solder broken gate and to find out solar cells with different conversion e. With the help of an elcd test a pv manufacturer can evaluate the quality of the cells manufactured and any other possible defects caused by bad cell quality and or later mishandling of photovoltaic panels. Electroluminsecence provides a wealth of data about the area related uniformity of solar cells and modules.

El imaging is becoming more and more important for quality testing of solar cells as the defects can be severe but are not visible to the naked eye. High quality high yield and maximum power output are crucial objectives for solar cell manufacturers trying to displace fossil fuels from energy generation. As most solar panels are 12 volts the solar panel test methods are basically the same. In the first case the machine completes the manufacturing process of the modules perfectly integrated with the assembly operations.

Ilumen performed an electroluminescence el test on some monocrystalline yingli panda yl270c 30b solar panels of 270wp which were put in operation 2 5 years ago. These panels seem to be signicantly affected by pid. Electroluminescence el imaging is used to test the manufactured solar modules for cell inherent defects such as micro cracks debris bad soldering and for instance to detect an inactive string inside a solar modules. Solar panels that are free from pid show a pattern in which all cells have the same brightness.

The luminescence signal of silicon peaks at 1150 nm corresponding to the energy of the bandgap 1. Advanced solar monitoring facilities report the direct global and diffuse solar irradiance in both the horizontal and array planes along with the solar angle of incidence atmospheric and weather conditions and the solar spectrum 350 1700 nm. You will want to ensure that you place the positive to positive and negative to negative when attaching your multimeter to the connection on the back of your solar panel. It is non descructive and relatively fast with measurement times of 1 s possible.