Solutions for solar modules in lab
h.a.l.m. offers ready-to-go high-end photovoltaic performance testers for lab use. The standard solutions cetisPV-Celltest3 and cetisPV-Moduletest3 include mechanical housings optimized for sun simulating. They are adaptable to many tasks. h.a.l.m. systems offer a wide scope of detailed analysis and measuring methods especially for the non-time-critical lab situation.
The cetisPV-Moduletest3 is a ready-to-go class A+A+A+ rated high-precision manual tester system for the IV measurement of solar modules. It is developed for high R&D, laboratory and quality control use. The standard setup is designed for module sizes of up to 210 x 140 cm².
High precision measuring
The h.a.l.m. IV curve tracer cetisPV-CTL1 is a 3-channel 16-bit AD converter with an electronic load for synchronous measurement of current, voltage, and irradiance. Above that, it tracks different temperatures via RTD or contact-free IR sensors for temperature correction according to IEC 60891 Ed. 2.0.
Active load for 3Q dark curves
The cetisPV-EL3-M is an add-on for the module IV curve tracer cetisPV-CTL1, which enables to drive the curve into negative current. This allows the recording of dark curves for more precise evaluating of series resistances. This add-on is a definitive must-have for thin-film, CIS and CIGS technologies.
Extendend flash performance
The sun simulator allows flash durations of up to 100 ms. h.a.l.m. offers unique features like single-flash hysteresis for capacitive modules and multi-level flashes, which allow to record IV curves at different intensities within one flash.
Optimized dark chamber construction
The measurement dark chamber provides mounting facilities for the flasher light box and the module setup. The side walls and the front doors are coated with anti-reflective tissue. For easy handling two light tubes illuminate the chamber. While closed, the operator is protected against the flash light and a proper dark-measurement situation is provided. Since this type of measurement is extremely sensitive to residual light, true dark IV measurements including the evaluation of very stable RserDf and RshuntDf values can be carried out.
Advanced measuring and analysis methods
For lab use, h.a.l.m. devices allow further measuring methods like sectional measurement or double flash hysteresis (or even the combination of both). The sectional measurement collects IV curve data over several flashes. Therefore, the total load sweep can be segmented over several flashes to reduce dynamical effects. Above that, two measurements (series) with inverted load sweep direction can be combined to reduce sweep directional influences.
Additional temperature control system
The cetisPV-Therm2-M is a hardware and software option for h.a.l.m. lab tester. This option includes a thermally insulated test chamber with the external heating and cooling device cetisPV-Therm2-M. The cetisPV-Therm2-M is connected with the insulated module test chamber via flexible tubes.
The system allows to drive temperature profiles from 15°C to 75°C while measuring the electrical performance of photovoltaic modules. The temperature dependency of the power as well as the module’s specific temperature coefficients can be analyzed. The module temperature can be regulated to and hold steady at every level in the specified temperature range (implementing maximum accuracy for STC-related measurements).
