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Mitigation of Input Ripple Current in Single Phase Fuel Cell Power Systems
Authors: Soumya Sinha, Wajiha Shireen, Sumit Pramanick
Number of views: 685
Fuel cells serve as clean, renewable and an efficient source of electrical energy. The power conditioning system associated with their applications consists of a DC-DC Converter stage and a DC-AC inverter stage. In a single-phase fuel cell system, the single-phase inverter introduces a secondharmonic component in the current drawn from the fuel cell source. This low-frequency current ripplehas been found to be detrimental to the performance, lifespan, and efficiency of the fuel cell, if notadequately controlled. The paper presents a single loop current control method for the DC-DCconverter stage that reduces the input current ripple drawn from the source in the single-phase fuelcell system. Simulations are carried out using MATLAB; the results compared with the conventionalmethod. To validate the proposed approach, experimental results from a laboratory prototype arepresented. The proposed method uses a Digital Signal Processor for control system monitoring andcontrol.