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An Investigations into the Fast-and Slow–Scale Instabilities of an Energy Generation System with a Fuzzy Hysteretic Control

01/2006;

ABSTRACT This paper presents an investigation of the nonlinear phenomena in the current mode controlled boost converter. The boost converter is used into an energy generation system with a PEM-Fuel Cell as energy source and a battery stack as energy storage device. The bifurcation diagrams with the reference current as the variable parameter have been obtained. The simulation results show that the converter shifts between period one, period two, higher periods and chaos as the some parameter is varied. The bifurcation phenomena have been reported for a clocked hysteretic controller. Using a clocked fuzzy hysteretic controller, a comparison of the effects on the DC/DC Boost converter response in state space, under reference current variations, load variations, and different component variations is performed.

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