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Hybrid energy storage systems (HESS) combine different energy storagetechnologies aiming at overall system performance and lifetime improvementcompared to a single technology system. In this work, control combinations fora vanadium redox flow battery (VRFB, 5/60 kW/kWh) and a lithium-ion battery(LIB, 3.3/9.8 kW/kWh) are investigated for the design of a HESS. Four real-timeenergy management/power allocation scenarios are considered for the operationof the hybrid storage solution through a 15-year economic and energeticanalysis. The results obtained for each scenario are compared with a singletechnology battery performance. In the definition of the scenarios, realelectricity generation is considered from two solar photovoltaic installations(3.2 kWp and 6.7 kWp) and an estimated representative load of a servicesbuilding. HESS performance is evaluated through specific energy and economickey performance indicators. The results obtained indicate that the use ofcustomized energy management strategies (EMSs) renders the VRFB and LIBcharacteristics complementary, besides enhancing the competitiveness of VRFB,as a single technology. Moreover, the HESS management impacts the seasonalityfactor, contributing to the overall electric system smart management.

Economic and Energetic Assessment of a Hybrid Vanadium Redox Flow and Lithium-ion batteries considering Power Sharing Strategies Impact