### Abstract

This work presents a mathematical modelling of a proton-exchange membrane (PEM) fuel cell

system integrated with a resistive variable load. The model was implemented using MATLAB

Simulink software based on an H-500xp pinch top PEM fuel cell type, and it is used to calculate the

reference fuel cell current at various steady-state conditions. The reference current is the input value

for the simulation of the PEM fuel cell performance. The model was validated using a Horizon H500xp model fuel cell stack system, with the following components: a 500 W PEM fuel cell, a 13.5

DC volt battery for the start-up, a super-capacitor bank to supply peak loads and a 48 V DC-DC

boost converter. In addition, the generated power is dissipated by a variable resistive load. The

results from the model shows a qualitative agreement with test bench results, with similar trends

for stack current and voltage in response to load and hydrogen flow rate variation. The discrepancies

ranged from 5% to 10%, depending on the load resistance applied. Both model and experiments

showed a hydrogen conversion efficiency of 80%.

system integrated with a resistive variable load. The model was implemented using MATLAB

Simulink software based on an H-500xp pinch top PEM fuel cell type, and it is used to calculate the

reference fuel cell current at various steady-state conditions. The reference current is the input value

for the simulation of the PEM fuel cell performance. The model was validated using a Horizon H500xp model fuel cell stack system, with the following components: a 500 W PEM fuel cell, a 13.5

DC volt battery for the start-up, a super-capacitor bank to supply peak loads and a 48 V DC-DC

boost converter. In addition, the generated power is dissipated by a variable resistive load. The

results from the model shows a qualitative agreement with test bench results, with similar trends

for stack current and voltage in response to load and hydrogen flow rate variation. The discrepancies

ranged from 5% to 10%, depending on the load resistance applied. Both model and experiments

showed a hydrogen conversion efficiency of 80%.

Original language | English |
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Number of pages | 13 |

Publication status | Published - 6 Oct 2019 |

Event | SDEWES: 14th Conference on Sustainable Development of Energy, Water and Environment Systems - Dubrovnik, Dubrovnik, Croatia Duration: 1 Oct 2019 → 6 Oct 2019 https://www.dubrovnik2019.sdewes.org/ |

### Conference

Conference | SDEWES |
---|---|

Country | Croatia |

City | Dubrovnik |

Period | 1/10/19 → 6/10/19 |

Internet address |

### Bibliographical note

© 2019 The Authors### Keywords

- Fuel cells
- modelling
- computer simulation

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## Cite this

Abdelnasir, O., Smith, D., Alaswad, A., Amiri, A., Sodre, J. R., & Lucchesi, A. (2019).

*Proton-exchange membrane (PEM) fuel cell system mathematical modelling*. Paper presented at SDEWES, Dubrovnik, Croatia.