Innovative Cleaning Technique for PV Modules on Helioslite Biaxial Solar Trackers

Certainly the tracking systems ensure higher performance and reliability compared with fixed systems, however, the soiling affects negatively the productivity of the PV modules. There is, therefore, a paramount importance to propose a cleaning technique integrated into the biaxial tracker characterized by Tilt and Roll kinetic. In this paper, an innovative cleaning was developed for the biaxial tracker of HeliosLite which has recently installed in our RDI Solar Energy Platform at PSES in Rabat. Based on a critical analysis of several existent cleaning solutions of PV modules as well as the structure of the tracker, a functional analysis has been done of the problematic discussed. This technique, based on the use of telescopic arm connected to rotating brush, has successfully accomplished the important criteria aimed by this work namely: autonomy, stability, low cost and efficiency.