© Altergen 2015
Output of a solar PV panel system is at its best when the panels are facing the sun. Solar PV tracking devices increase the time that the PV panels directly face the sun. This substantially increases output.
Solar tracking devices can increase performance by 15 to 40% when compared to a fixed panel system. The increase in output is one of the benefits of installing a PV tracker. Additional benefits can include:
The solar PV tracker is usually supplied as a 12, 18, 20, 40 and 80m² uniaxial or biaxial platform with monocrystalline or polycrystalline panels.
In additional to the solar PV tracking device, solar panels and inverter you need to cost for the mechanical and electrical works including a ground survey for the foundations.
As guide to what can be expected in energy terms, a 40m² solar tracker has a peak power rating of approx. 5 - 6kW dependent on the PV modules used.
The technical specification for a 40m² solar PV Tracker is detailed below
SOLAR TRACKER DEVICE
Type Biaxial/dual axis
Maximum module surface 42 m²
Minimum module surface 33 m²
Minimum ground clearance 0.59 m
Mast height 3.5 m
Mast diameter 406 mm
Wind load DIN 1055-4 wind zone 4 = 30.0 m/s
Snow load Average
Shut-down (high wind) 11.11 m/s
Slope of ground 0 to 5 %
Soil pressure average 150 kN/m²
Module weight max. 14 kg/m²
Assembly system max. 2.5 kg/m²
The following predicted outputs and CO2 figures for a 40m² tracker are based on the UK and uses Birmingham as a reference point. They do not assume any shading effect.
Type High efficiency monocrystalline
Rated Peak Power 5.88kW
Number of modules 28
Predicted outputs (in the UK) 5656kWh
CO2 offset in kg/p.a 2432.08
Rated Peak Power 5.28kW
Number of modules 24
Predicted outputs (in the UK) 4874kWh
CO2 offset in kg/p.a 2095.82
Rated Peak Power 5.04kW
Number of modules 24
Predicted outputs (in the UK) 4727kWh
CO2 offset in kg/p.a 2032.61
Type Concrete pads, piers or screwpile
Type Microprocessor based
All systems would have a wind sensor to track the modules in a horizontal position if the wind speed is higher than 40km/h. The modules will remain in this position, overriding any other settings, until the wind speed has fallen under this.
In case of a cable break at the wind sensor the modules would be tracked to a horizontal position.
The solar PV tracker solution is also available on a 12, 18, 20, and 80m² uniaxial or biaxial platform with monocrystalline or polycrystalline panels. You would need the tracker, panels and inverter, the mechanical and electrical installation including a ground survey for the foundations.
20 Years rust proof guarantee.
Annual or after severe events.