Desert challenge for photovoltaic plants
Our solution designed for extreme conditions
It’s not usual to find such complicated locations when designing a tracker and our AXONE is the ideal tracker for these harsh conditions. It’s a single-axis multi-row tracker, that is, a single actuator moves up to 20 rows of 60 modules. It is used in areas with extreme weather conditions, high temperatures and environments where electronics can deteriorate rapidly. This tracker requires an engine and a controller for every 350 to 400 kWp versus a single-row tracker that contains between 20 and 30 kWp of power.
Therefore, motors, drives and electronics are reduced between 10 and 15 times.
Reduced number of motors and actuators
High temperatures, up to 50ºC in the shade, make the electronic components and their durability very vulnerable. Also, it is not possible to consider solutions with batteries due to the high replacement costs in a short time.
If you can reduce the number of these units by a factor of 15 and provide very robust units, maintenance is substantially reduced and availability increases significantly.
Behavior against extreme and sudden wind speeds
In the desert there have been increases in wind speed of 25 m/sg in two minutes, without prior notice and it is not usual to take the tracker from 55º to a defense position in less than 7 minutes.
Axone has proven to be able to withstand up to 30 m/sg in working position without suffering any damage.
Alarm against sandstorms
One of our priorities has been to anticipate the meteorological conditions and to be able to foresee with time those situations, such as sandstorms, which can deteriorate the components.
Allows to reduce the abrasiveness of the sand, which also contributes to the deterioration of the PV modules and to position itself in defense position, with very little loss of production due to the low irradiation in those circumstances (300 w / m2)..
Components resistant to temperature, abrasion and aggressiveness
Most small-thickness components are manufactured at Magnelis with ArcelorMittal’s 25-year durability guarantee. The components treated with Magnelis are up to ten times more resistant to abrasion than traditional galvanized steel. In addition, we have minimized the maintenance needs of AXONE, which makes it a tough, economical and durable tracker.
This solution substantially improves the ability to resist abrasion and the constant presence of dust and sand particles with aggressive steel components.
Constant cleaning procedure is required throughout the year to maintain the losses due to dirt in the modules within reasonable limits
PVH has designed a water-free cleaning robot to act in those circumstances, with 4 hours of autonomy and interchangeable batteries, completely autonomous and with capacity to free the hole in the center of the row where the actuator is located, and able to jump between linear rows with a distance up to 60cm.
With very little staff for cleaning, the cleaning robot performs the continuous cleaning work by acting on any type of module, including frameless modules without causing any damage to them.
Clean solar panels improve up to 5% the productivity of PV plants of any size, specially needed at PV plants in desert areas.