Exosun is now offering its ‘Exotrack’ HZ horizontal single-axis tracker with an intelligent patented backtracking process, called ‘SMARTracking’. Exosun’s Exotrack HZ will be on display at Solar Power International (SPI 2014), held October 21-23 in Las Vegas.
Solar trackers are motorized structures that orient photovoltaic panels toward the sun throughout the day, to significantly increase PV plant output in comparison to fixed-tilt structures. All PV tracker control programs include a standard backtracking system to minimize shading on PV modules during periods of low solar height (early morning and late afternoon). It usually relies on the theoretical positioning of the trackers on the plant, possibly followed by arduous on-site fine tuning.
Exosun’s engineering teams took into account variations in the terrain and the real on-site implementation of the trackers to minimize shading and more accurately position the tracking system. The SMARTracking system is based on a three-dimensional positioning analysis of each solar tracker on site, thereby achieving the best alignment for the trackers and enabling to individualize the control of each tracker. Consequently, SMARTracking allows a PV plant to generate up to 5% more energy yield annually compared to other traditional single-axis trackers, maximizing ROI. For example, a 7MW project in South West France, generated 440MWh of electricity more per year than would be expected.
PV power plants.
The Exotrack HZ is claimed to have 30 to 50% fewer piles than traditional trackers. The low number of piles required per m² of solar modules, associated with its high installation tolerances, has a direct impact on CapEx since it decreases material needs and installation time. Typically 5 or 6 trackers are required per MWp. Up to 1200m2 of (12,916 ft2) of tracked area is used with a ground coverage ratio of up to 50%.
October 2014 onwards.