Hardware-in-the-Loop Experimental And Numerical Simulation Of Molten Carbonate Fuel Cell/Micro Gas Turbine Hybrid Power System

Fuel cell is considered as a good candidate for the next generation power source. Among the various fuel cell types the molten carbonate fuel cell (MCFC) is a very promising technique, which is now about to become commercially used. The MCFC is considered to be a second-generation fuel cell. It has high efficiency and lower emissions of NOx and SOx. The MCFC has been proposed in recent years as an extremely efficient solution for power generation. The integration of micro gas turbine and molten carbonate fuel cells has been proposed in the last years as an extremely efficient solution for power generation.Main contents and conclusions of the research are described in the following:(1) Dynamical numerical simulation of molten carbonate fuel cellThe paper presents a set of two dimensional molten carbonate fuel cell mathematical models, considering electrical, mass and heat transfer character in molten carbonate fuel cell. A dynamical simulation model was created under the V C + + environment. The distribution parameters, such as react temperature, current density and gas species concentration have important effect on the operation of the fuel cell. So there is a very important significance which predicts the distribution of temperature current density and species concentration. We obtained the steady and dynamic simulation results of molten carbonate fuel cell using the simulation model. The results are directive for design and operation of molten carbonate fuel cell.(2)Energy and exergy analysis of Molten Carbonate Fuel Cell/Micro Gas Turbine hybrid power systemsThe integration of micro turbines and high-temperature fuel cells has been proposed in recent years as an extremely efficient solution for power generation. Two typical MCFC/MGT hybrid systems (the bottoming cycle and the topping cycle), respectively, are examined. Steady-state thermodynamic energy and exergetic models for MCFC/MGT hybrid power systems are developed on the IPSEpro simulation platform, and applied to the design and off-design performance analysis of energy and exergy. Full analysis of the energy and exergy at each component of the system is conducted such as fuel cells, oxidizer, gas turbine, and compressor and so on. The results show that the hybrid power systems have very good off-design performance. This is very important to the distributed generation systems.(3)Design of MCFC/MGT hybrid system hardware-in-the-loop simulation testing rigThe third part of this thesis is about the study of hardware-in-the-loop simulation and its application in MCFC/MGT hybrid system. A physical subsystem compatible with the physical part is designed and implemented. The final result is that a complete hardware-in-the-loop simulation system including physical subsystem and simulation model (and its running environment) is built up. We design accurate interface, including D/A interface and A/D interface. The results show that the design and implementation of hardware-in-the-loop simulation system is successful...