Recent interest in fuel cell-gas turbine hybrid applications for the aerospace industry has led to the need for accurate computer simulation models to aid in system design and performance evaluation. To meet this requirement, solid oxide fuel cell (SOFC) and fuel processor models have been developed and incorporated into the Numerical Propulsion Systems Simulation (NPSS) software package. The S...

Fuel cells offer the possibility of zero-emissions electricity generation and increased energy security. We review here the current status of solid oxide (SOFC) and polymer electrolyte membrane (PEMFC) fuel cells. Such solid electrolyte systems obviate the need to contain corrosive liquids and are thus preferred by many developers over alkali, phosphoric acid or molten carbonate fuel cells. Dra...

This study developed a hybrid self-organizing fuzzy and radial basis-function neural-network controller (HSFRBNC) for active suspension systems. The HSFRBNC uses a radial basis function neural-network to adjust the learning rate and the weighting distribution of a self-organizing fuzzy controller (SOFC) in real time, as an alternative to obtain these parameters through trial and error. Therefor...

A comprehensive mathematical model of the performance of the cathode-supported solid oxide fuel cell (SOFC) with syngas fuel is presented. The model couples the intricate interdependency between the ionic conduction, electronic conduction, gas transport, the electrochemical reaction processes in the functional layers and on the electrode/electrolyte interfaces, methane steam reforming (MSR) and...

This work aims to analyse and compare the thermodynamic performance size of two types solid oxide fuel cell (SOFC)-based plants. The former is conventional H2-fed plant based on SOFC with an oxygen-ion conducting electrolyte (SOFC-O), latter using a proton-conducting (SOFC-H). Thermodynamic analysis reveals that in SOFC-H system, due H2O formation at cathode side, not only anode concentration l...

Robotic systems are complicated, nonlinear, multiple-input multiple-output (MIMO) systems, which make the design of model-based controllers for robotic systems particularly difficult. Moreover, to achieve reasonable control performance, the dynamic coupling effects between degrees of freedom (DOFs) of the robotic systems must be overcome during the control process. Although a model-free, self-o...

We present the ReaxFF reactive force field developed to provide a first-principles-based description of oxygen ion transport through yttria-stabilized zirconia (YSZ) solid oxide fuel cell (SOFC) membranes. All parameters for ReaxFF were optimized to reproduce quantum mechanical (QM) calculations on relevant condensed phase and cluster systems. We validated the use of ReaxFF for fuel cell applic...

Biomass gasification processes are more commonly integrated to gas turbine based combined heat and power (CHP) generation systems. However, efficiency can be greatly enhanced by the use of more advanced power generation technology such as solid oxide fuel cells (SOFC). The key objective of this work is to develop systematic site-wide process integration strategies, based on detailed process sim...

In this work, a 3D multi-physics coupled model was developed to analyze the temperature and thermal stress distribution in planar solid oxide fuel cell (SOFC) stack, then effects of different flow channels (co-flow, counter-flow cross-flow) electrolyte thickness were investigated. The simulation results indicate that generated power is higher while lower co-flow mode than those cross-flow mode....

The integrated solid oxide fuel cell (SOFC)/gas turbine (GT) system is an appealing power generation solution for mobile applications from energy conversion efficiency point of view. The relatively poor dynamic capabilities of the SOFC/GT system, which are often the results of system characteristics and SOFC operation safety considerations, limit their widespread applications and must be enhanc...