Mitigation of Input Ripple Current in Single Phase Fuel Cell Power Systems
Soumyajeet Sinha, W. Shireen, S. Pramanick
Sep 14, 2017
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Key Takeaway Key Takeaway: The proposed single loop current control method effectively reduces input current ripple in single-phase fuel cell systems, improving performance and lifespan.
Abstract
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 second harmonic component in the current drawn from the fuel cell source. This low-frequency current ripple has been found to be detrimental to the performance, lifespan, and efficiency of the fuel cell, if not adequately controlled. The paper presents a single loop current control method for the DC-DC converter stage that reduces the input current ripple drawn from the source in the single-phase fuel cell system. Simulations are carried out using MATLAB; the results compared with the conventional method. To validate the proposed approach, experimental results from a laboratory prototype are presented. The proposed method uses a Digital Signal Processor for control system monitoring and control.