Research And Simulation Of Fuel Cell Power Generation System

People put forward higher requirements to the clean living environment while people pursuiting the material life.Power resources are the indispensable living resources of human beings.The excessive exploitation and use of primary energy makes the primary energy close to depletion and causes serious pollution to the environment.Increasing fuel cell power generation efficiency and reducing energy consumption is part of the power generation system.The development of fuel cell power generation system in recent year,the problems encountered in the research process and the solution has been reviewed.The SOFC and SOFC inverter system and its control strategy have been deeply studied and discussed.In this paper,medium high temperature SOFC used as the object,the transient response and dynamic response of SOFC,voltage,power and fuel consumption have been analyzed in the condition of current rising.Considering the instability of the output voltage of the SOFC stack,a design scheme of an improved isolated boost converter has been proposed to suppress the voltage oscillation and improve the stability of DC bus voltage.The single phase full bridge inverter is used in the inverter,and the single SPWM method is used for power switch modulation,which can effectively control the output voltage waveform distortion.Finally,the control strategy for improving the output voltage of SOFC has been proposed,which is the combination of PID and fuzzy control,at the same time to play their respective advantages and make up for their deficiencies.The mathematical model of SOFC power generation system has been established,and MATLAB simulation has been carried out at the same time,which verifies the correctness of the theory and provides a new idea for the research of fuel cell in power generation industry.