Environmental data for installation site
Latitude [°] 45° 31’ North
Longitude [°] 9° 04’ East
Altitude [m] 144
Azimuth [°] 30 West
663 Würth Solar photovoltaic panels are installed horizontally, with only enough slope to ensure efficient rainwater run-off. For the same reason the support system is also designed to create a surface that is continuous in the direction of maximum slope. The PV panels are connected in series to form 39 strings of 17 panels each. At the ends, the strings are connected to two control boxes.
The canopy also incorporates 162 screen printed glass panels to complete the roof structure and provide shade for pedestrian traffic beneath. These dummy panels are located at points where shading during the day is too high to guarantee adequate efficiency from the photovoltaic panels.
The system incorporates a data logger with a GSM connection to monitor operating parameters and to detect any malfunctioning.
The canopy structure
The metal structure of the canopy is made up of:
- steel posts, 150X150 mm in size, located at intervals of approximately 8 metres, about 3 metres high in the pedestrian area and about 5 metres high in the vehicular traffic area;
- 150 x 200 mm beams running between the posts;
- an internal trellis made from 100 x 50 mm tubes and designed to form a grid of 1.20 m x 60 cm to support the photovoltaic modules.
The photovoltaic panels are secured to the trellis by aluminium profiles with seals to maintain water tightness. The roof has a slope of about 1.2% to ensure efficient rainwater run-off.
The installation uses a single Würth Solergy X50 inverter (Pnom 50 kWp) to provide centralised management for the entire photovoltaic field.