Mathematical Model and Characterization of the Transient Behavior of a PEM Fuel Cell

Friede, Wolfgang; Raël, Stéphane; Davat, Bernard

doi:10.1109/tpel.2004.833449

Cited by 152 publications

(63 citation statements)

References 13 publications

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“…Considering the effects of membrane hydration more rigorously requires computing membrane water content as a function of position, as by Friede et al 287 and Yu and Ziegler.…”

Section: Isothermalmentioning

confidence: 99%

Modeling Water Management in Polymer-Electrolyte Fuel Cells

Weber

Balliet

Gunterman

et al. 2008

Modern Aspects of Electrochemistry

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“…Considering the effects of membrane hydration more rigorously requires computing membrane water content as a function of position, as by Friede et al 287 and Yu and Ziegler.…”

Section: Isothermalmentioning

confidence: 99%

Modeling Water Management in Polymer-Electrolyte Fuel Cells

Weber

Balliet

Gunterman

et al. 2008

Modern Aspects of Electrochemistry

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“…13. This phase shift determines the power transfer between the high DC-bus voltage and the low battery voltage [13]. The battery controller consists of a PI voltage controller and a PI current controller to limit the current in buck mode.…”

Section: Simulation Resultsmentioning

confidence: 99%

Optimized Design of Bi-Directional Dual Active Bridge Converter for Low-Voltage Battery Charger

Jeong¹,

Ryu²,

Kim³

et al. 2014

Journal of Power Electronics

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This study proposes an optimized design of a dual active bridge converter for a low-voltage charger in a military uninterrupted power supply (UPS) system. The dual active bridge converter is among various bi-directional DC/DC converters that possess a high-efficiency isolated bi-directional converter. In the general design, the zero-voltage switching(ZVS) region is reduced when the battery voltage is high. By contrast, efficiency is low because of high conduction losses when the battery voltage is low. Variable switching frequency is applied to increase the ZVS region and the power conversion efficiency, depending on battery voltage changes. At the same duty, the same power is obtained regardless of the battery voltage using the variable switching frequency. The proposed method is applied to a 5 kW prototype dual active bridge converter, and the experimental results are analyzed and verified.

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“…Several factors are responsible for the voltage drop in a fuel cell and they are referred as polarization. The losses originate from three sources: a) activation polarization b) ohmic polarization and c) concentration polarization [4]. Each of these is associated with a voltage drop and is dominant in a particular region of current density.…”

Section: Fig 2 Ideal VI Characteristics Of a Single Pemfcmentioning

confidence: 99%