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1 energy provided by a wind turbine. The most relevant property of this renewable energy 2 source is its highly random value. For this reason, a new study of the VRFB behavior 3 under a discontinuous charge produced by wind turbine has been developed. The obtained 4 results have been compared with a similar test where a galvanostatic charge process has 5 been applied using the same total electric charge. In both kind of tests, a STERION LT105 6 membrane was used to separate the positive and negative electrode compartments. This 7 membrane allows the correct performance of the VRFB, but it degrades quickly due to 8 highly corrosive electrolyte. This strategy allows us to simulate an accelerate degradation 9 in the performance of the VRFB carrying out very low number of charge/discharge cycles 10 2. MATERIALS AND METHODS 11 12 turbine that supplies the renewable energy, the potentiostatic unit, which supplies the 13 energy according to the renewable energy profiles to the VRFB and the VRFB setup itself. 14 2.1. Wind turbine 15 Electricity production profile obtained from a Bornay 600 wind turbine (Bornay 16 Aerogeneradores, Alicante, Spain) was used. The turbine is composed of two fiberglass 17 blades (1.0 m long) controlled by an electronic regulator of 24 V and 30 A. The regulator 18 acts on the turbine as an automatic overspeed-governing system to keep the rotor from 19 spinning out of control in very high winds. In-house computer software (developed with 20 Labview, National Instruments) was used to control the process and monitoring the actual 21 wind speed. Further details can be found elsewhere [4, 5]. 22 2.2. Vanadium Redox Flow Battery 23 The experimental device used in this work has been supplied by Baltic Fuel Cells 24 and it is composed of two differentiated modules: a quick connect fixture (qCf-RFB) that 25 allow the compression of the internal components of the commercial RFB cell (cF40- A scheme of experimental setup is shown in Figure 1. It is composed of a wind 5PDF Image | Vanadium Redox Flow Batteries for wind turbines
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