abstract

• Fuel-cell stacks are an attractive and efficiently way for power generation; however, its low and unregulated DC output voltage demands a DC-DC conversion stage to step-up the voltage to suitable levels. In this way, a transformerless boost converter with high step-up conversion ratios is proposed in this work to process the energy from a fuel-cell stack. This configuration is formed by two inductors, two active switches, one diode and one output capacitor. Both inductors are charged (simultaneously) in parallel via the active switches, and discharged in series across the diode. The dynamical behavior of the fuel-cell stack connected to the transformerless boost power converter is captured in terms of Kirchhoff voltage and current laws. As a result, a set of mathematical representations for feedback purposes is detailed. Experimental results are shown for a 250 W laboratory prototype to verify the validity of the proposed models. © 2016 IEEE.

authors

• Diaz-Saldierna L.H.
• Langarica Córdoba Diego
• Leyva-Ramos J.
• Morales Saldaña Jorge Alberto

publication date

• 2016-01-01

published in

• 2016 IEEE International Conference on Automatica, ICA-ACCA 2016  Proceedings

keywords

• DC-DC power converters; non-linear dynamical systems; PEM fuel-cell stack; pulse width modulation converters Dynamical systems; Electric inverters; Fuel cells; Linear control systems; Power converters; Proton exchange membrane fuel cells (PEMFC); Pulse width modulation; Voltage control; BOOST converter; Dc-Dc conversion; Dynamical behaviors; Mathematical representations; Output capacitor; PEM fuel cell stack; Power generation systems; Pulse width modulation converters; DC-DC converters

Digital Object Identifier (DOI)

• 10.1109/ICA-ACCA.2016.7778478

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