Photovoltaic
We work closely together with suppliers of PV substructures
with planning and production, the static calculations for worldwide plant locations.
Constant further developments for ground, tracker and roof constructions
taking into account the respective location of the project and its
corresponding peculiarities and burdens as well as the international
different standard regulations and requirements for test certificates
require permanent further training of our specialist knowledge.
Freeland photovoltaic systems
These types of power plants produce electricity ecologically and efficiently
and at the same time have an immense capacity.
The solar modules are mounted on metal frames and in long
arranged in parallel rows. To avoid shading of the modules,
the systems are mounted with sufficient distance from each other.
Areas that are often not used are military, industrial and commercial areas
or also areas along motorways, railway lines or on landfills.
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The expansion of renewable energies is an important part of the energy transition,
in this context, the Renewable Energy Sources Act (EEG)
first came into force in 2000 and has been continuously developed since then.
The aim of the EEG is to restructure the energy supply and to increase the proportion of
renewable energies in the power supply to at least 80% by 2050.
The modules of the tracker system can be characterized by an integrated tracking system
automatically align and thus maximize the yield. With the ability to look around
Rotating a single central axis, tracker systems can view the sun from
Track sunrise to sunset.
The angle of incidence is minimized, the solar gain is maximized.
Trackers also offer some unique design situations found in systems with
fixed inclination does not occur. They are designed to be dynamic and static
Resist forces through active and passive protection methods.
Tracker photovoltaic systems
As a floating PV (floating photovoltaics), the structural design of
floating systems for photovoltaic modules according to international standards.
The photovoltaic modules on boats are made from cold-formed
steel structures, so in addition to the wind load, the
Wave dynamics are taken into account.
Together with the company ZIMMERMANN PV-Stahlbau GmbH & Co. KG
we have developed special breakwaters for this purpose. The cooling effect of water
has a very beneficial effect on the modules.
Floating photovoltaic systems
Agri-photovoltaic systems
Agri-PV combines the harvesting of food with the harvesting of energy.
Semi-transparent modules can be used.
Researchers from Oregon State University in the United States have in an in
the study published in Nature calculated that in theory
less than 1% of the world's land used for arable farming would suffice,
to cover the entire global electricity demand.
In practice, according to the study, solutions for storage are still needed
and the transport of electricity can be found.
The Fraunhofer Institute for Solar Energy Systems ISE was also able to do so in initial tests
at Lake Constance an increase in the land use rate of up to 186%.
The Demeter farm community in Heggelbach on Lake Constance was able to
cultivated crops of winter wheat, potatoes and celery have a higher yield
recorded than on reference areas without solar modules.
"Related to potatoes, there is an increase in land use efficiency of 86% per hectare",
says project manager Stephan Schindele from Fraunhofer ISE. At the farm community in Heggelbach
the solar power is stored directly on site. Thus arise for the farmers by
Synergy effects additional sources of income.
In developing countries and arid areas have large parts of the rural population
no access to affordable energy, in addition, the valuable drinking water resources
often used for irrigation of agricultural crops.
Agro-PV systems would provide energy and at the same time through the
Shading of arable land reduces the need for irrigation.
The often too strong exposure to the sun and heat could also be caused by the
partial shading can be optimized.
In a project as part of the EU program Horizon 2020 , Fraunhofer researchers are examining how agro-PV systems affect the water balance (reduced evaporation + rainwater harvesting).