Project portraits - Research for the energy transition


Interior view of a concentrator photovoltaic module
© AZUR SPACE Solar Power GmbH

Photovoltaics
Module with five-junction solar cell achieves efficiency of 32 per cent

Multi-junction solar cells are suitable for concentrating photovoltaics in sunny countries. The efficiency of the module reaches 41 percent.

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Module manufacturing
© AZUR SPACE Solar Power GmbH

Photovoltaics
Simple structure of concentrator photovoltaic modules

Modules for concentrating photovoltaics are to be built directly on site in sunny countries to save transport and production costs.

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The photo shows an aerial view of the Meerwind wind farm with a computer rendering symbolising the monitoring of the power electronics.
© WindMW Service

Wind power
Avoiding standstill

Special measurement methods monitor the condition of the power electronics and determine the remaining lifetime of the individual components.

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High-temperature test stand
© Baker Hughes

Geothermal Energy
Reliable centrifugal submersible pumps for deep geothermal energy

No lime on bearings and seals of submersible pumps that pump hot and calcareous thermal water at a depth of several hundred metres.

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Laser head with optics module
© Fraunhofer IPT - Guido Flüchter

Geothermal energy
Laser beam accelerates geothermal drilling

LaserJetDrilling is the name of a new process in which a laser beam that is guided within a water jet weakens hard rock before it is actually drilled.

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Wind energy nacelle on the test bench
© CWD

Wind power
Test benches and outdoor field trials in comparison

Test benches offer reproducible conditions compared to testing new wind turbines in the open field. But is this data enough for certification alone?

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Zone melting process
© Fraunhofer CSP

Photovoltaics
Efficient solar cells developed from float-zone silicon

Bifacial silicon solar cells achieve an efficiency of 21.6 per cent. New ultra-thin wires cut more wafers from a silicon crystal.

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Screen printing plant
© Fraunhofer ISE – Dirk Mahler

Photovoltaics
New screen printing process for ultra-thin contact fingers for efficient silicon solar cells

A new screen printing process enables the printing of narrow contact fingers on silicon solar cells of less than 20 microns.

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Biogas plant in Baasdorf, Saxony-Anhalt in Germany
© Fraunhofer IKTS – Björn Schwarz

Bioenergy
Biogas plant uses straw and chicken manure

Straw and chicken manure accumulate in large quantities and are suitable for material and energy recovery in biogas plants. 

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