Cooperative control of Fuel Cell in a VSI-basedMicrogrid considering Load changes

As fuel cell systems originally have a large time constant to intothe load, it is very critical in distributed generation systemsspecially based on Fuel cells to response more rapidly todisturbances. In this paper new method based on Ultracapacitor system (UC) and bidirectional buck-boost convertorproposed to improve voltage & frequency response of fuel cell incondition of rapid load changes. To illustrate the validation ofthis method, proposed system has been employed into a smalldistribution system which is faced to rapid changes of load. Thismethod has been simulated via Mat-Lab Simulink , and resultsof them have been proposed in the paper.Introductio