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In this paper, a nonlinear flatness and sliding mode controllers of a Fuel Cell and Supercapacitor (FC/SCs) DC-link voltage are proposed and validated by the simulation results. The nonlinear flatness strategy provides a simple way to achieve a linearizing feedback control law, which allows giving an exponential tracking of the desired energy references of FC and SCs. The ideas behind the proposed...
This paper presents advanced power management strategy for a stand-alone hybrid power system. The proposed system consists of a photovoltaic panel, Proton exchange membrane fuel cell and a battery-electrolyzer-super capacitor energy storage system. All the system components are connected to the same DC voltage bus through appropriate Dc-Dc power converters and supposed to be controlled by independent...
This paper discusses the concept of simple sliding mode to resolve the problem of control of a three-level boost converter for fuel cell applications. Simple sliding mode involves simple sliding surfaces; they are a class of surfaces that reveals the dispersion of nonlinear stabilizing surfaces for a given nonlinear MIMO system. In the case of the three-level boost converter, simple surfaces have...
This paper proposes a sliding mode controller for air supply subsystem on a PEM Fuel Cell system in order to regulate and replenish the oxygen depleted from the Fuel Cell cathode during stack current demands. According to the stack current, a reference value of air flow was obtained with the steady-state analysis of oxygen excess ratio (OER). To ensure the system working in the reference value of...
A three dimensional computational fluid dynamics model is proposed in this paper to investigate the effect of flow field design and dimensions of current collectors on performance of proton exchange membrane fuel cell (PEMFC) under different operating conditions. Influences of the ribs and openings current collector dimensions have been studied and analyzed in order to find the optimum ratio between...
In the last years, the alternative energy resources and the fuel cell based distributed generation (DG) system applications have attracted increased interest. This paper investigates a doubly Fed Induction Generator (DFIG) wind turbine and a Fuel Cell (FC) based DG system. The modeling and the control of a hybrid DFIG WT/FC system are presented. The system configuration and the characteristics of...
This paper proposes a contribution to control strategy for hybrid power source based on fuel cells as the main energy source and supercapacitors as the auxiliary power source for vehicle applications. First, 3-phase parallel boost converters and 3-phase parallel bidirectional converters are proposed with a switching interleaving technique as controls. Mathematical models of the FC and the supercapacitor...
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