SOFC/GT hybrid systems (HS) thanks to their high performance, in term of efficiency, emissions and fuel flexibility can represent a remarkable solution for Micro-Grids power range. In particular, due to the synergistic effect of using a high temperature fuel cell such as Solid Oxide Fuel Cell (SOFC) and a recuperative gas turbine (GT), the integrated system efficiency and flexibility can be significantly increased during load following operation. Specifically, the goal of this paper is to develop a main control strategy to regulate both GT and SOFC produced power following a daily load demand typical of a Micro-Grid. In particular, in the model, thanks to the implemented thermal SOFC management, also SOFC takes part to the partialization process. In this way, the developed model permits to guarantee high HS efficiency performance (54.5% mean efficiency on daily bases), short time response and a wide part-load degree (up to 42.8% of nominal HS power), proving the feasibility of SOFC/GT hybrid system integration in Micro-Grids.
Integration of SOFC/GT hybrid systems in Micro-Grids
BARELLI, Linda;BIDINI, Gianni;OTTAVIANO, PANFILO ANDREA
2017
Abstract
SOFC/GT hybrid systems (HS) thanks to their high performance, in term of efficiency, emissions and fuel flexibility can represent a remarkable solution for Micro-Grids power range. In particular, due to the synergistic effect of using a high temperature fuel cell such as Solid Oxide Fuel Cell (SOFC) and a recuperative gas turbine (GT), the integrated system efficiency and flexibility can be significantly increased during load following operation. Specifically, the goal of this paper is to develop a main control strategy to regulate both GT and SOFC produced power following a daily load demand typical of a Micro-Grid. In particular, in the model, thanks to the implemented thermal SOFC management, also SOFC takes part to the partialization process. In this way, the developed model permits to guarantee high HS efficiency performance (54.5% mean efficiency on daily bases), short time response and a wide part-load degree (up to 42.8% of nominal HS power), proving the feasibility of SOFC/GT hybrid system integration in Micro-Grids.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
