Solid Oxide Fuel Cell Dynamic Model and Controlling the Output Voltage

TitleSolid Oxide Fuel Cell Dynamic Model and Controlling the Output Voltage
Publication TypeConference Paper
Year of Publication2009
AuthorsKhojasteh, M, abbaspour T.F A
Conference NameProceedings of the 44th International Universities Power Engineering Conference
Date PublishedSeptember
Conference LocationUniversity of Strathclyde
KeywordseCars and storage Renewable Energy Systems
Abstract

In this paper, after surveying the principle of SOFC, the dynamic model for solid oxide fuel cell (SOFC) is presented, which is usable for studying the dynamic behavior and small signal and transient stability in power systems. The model which is based on electrochemical, mass flow and thermal equations, considers the activation losses, concentration losses and ohmic losses. The fuel cell power plants are connected to the grid by a dc/ac inverter. For designing the inverter, the pulse-width-modulation (PWM) technique is used.For keeping cell output voltage constant to variety of network current, the pressure of input fuel is controlled by take feed back from cell output current.