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Redox flow batteries - already an alternative storage solution for hybrid PV-mini-grids?

 
: Vetter, M.; Dennenmoser, M.; Schwunk, S.; Smolinka, T.; Dötsch, C.; Berthold, S.; Tübke, J.; Noack, J.

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Fulltext urn:nbn:de:0011-n-1592570 (236 KByte PDF)
MD5 Fingerprint: db254b4a6d7422c7c729413f7caa61cb
Created on: 7.2.2015


Ostbayerisches Technologie-Transfer-Institut e.V. -OTTI-, Regensburg:
PV-Hybrid and Mini-Grid. 5th European conference 2010 : Tarragona, Spanien, April 29th/30th, 2010
Regensburg: OTTI, 2010
ISBN: 978-3-941785-15-1
pp.100-109
European PV-Hybrid and Mini-Grid Conference <5, 2010, Tarragona/Spain>
English
Conference Paper, Electronic Publication
Fraunhofer ISE ()
Elektrische Energiesysteme; Speichertechnologien; Alternative Photovoltaik-Technologien; Redox-Flow-Batterien

Abstract
Due to the flexible scalability of the power to energy ratio redox flow batteries are a suitable solution for quite a lot of decentralized applications. E.g. the autonomy time of a stand-alone system or mini-grid can be raised by increasing the tank size of the redox flow battery. In this paper the test site "Rappenecker Hof" in the black forest is used as an example for simulation based life cycle cost analyses of a vanadium redox flow battery integrated in an autonomous hybrid PV system. Two cases with lead acid batteries are considered as benchmarks for economic viability of the redox flow battery solution in such applications. At the moment a 1 kW / 6 kWh system for decentralized solutions is developed and will be installed in the "Solarhaus" in Freiburg. The main results of the cell stack and system design as well as performance data are presented. Furthermore simulation models and the model based development of the "Smart Redox flow Control" are described. For the optimized integration of the storage unit in the energy system a communication interface for exchanging data with the supervisory energy management system is introduced. On this basis a SOC forecast according to a given demand profile can be determined.

: http://publica.fraunhofer.de/documents/N-159257.html