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Modeling of the architectures of the auxiliaries of a Proton Exchange Membrane Fuel Cell system: Modeling of a Proton Exchange Membrane Fuel Cell multi-stack system in Amesim
KTH, School of Electrical Engineering and Computer Science (EECS).
2024 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Modellering av hjälpsystemens arkitektur i ett protonbytesmembranbränslecell system : Modellering av ett protonbytesmembranbränslecell multi-stack system i Amesim (Swedish)
Abstract [en]

The development of a clean new energy for the transport sector seems to be necessary in order to fight against climate change. For this purpose, hydrogen is seen as a possible solution, as it is usually considered as a clean fuel: its oxidation only produces water. Hydrogen can be used in fuel cells to produce electrical power. One of the most used fuel cell in the industry is the Proton Exchange Membrane Fuel Cell (or Polymer Electrolyte Membrane Fuel Cell) (PEMFC). The PEMFC is highly suitable for the transport industry, thanks to its high power density, but also for electricity generation in a stationary application. This research and development project fits in the context of reducing pollutant emissions and the development of hydrogen solutions for a cleaner mobility. Currently, in the market, there are only stacks with about hundreds of kilowatts. To raise the power to greater levels, without developing new stacks, multi-stack systems need to be designed. PEMFC multi-stack models of about one megawatt were developed in Amesim, a 0/1D modeling software, in order to find the best architectures of the auxiliaries, according to several criteria. Different configurations were studied, mainly: counter-current and co-current flow configuration, series and parallel configuration at the anode side, and, series, parallel and dual configuration at the cathode side. According to the Amesim simulations performed, the parallel configuration at both the anode and cathode side was found to be the most optimal, along with the countercurrent flow configuration. The influence of increasing the number of stacks was also investigated and five stacks per compressor was seen as an adequate solution.

Abstract [sv]

Utvecklingen av en ren ny energi för transportsektorn verkar vara nödvändig för att bekämpa klimatförändringarna. För detta ändamål ses vätgas som en möjlig lösning, eftersom det vanligtvis betraktas som ett rent bränsle: vid oxidation bildas endast vatten. Vätgas kan användas i bränsleceller för att producera elektrisk energi. En av de mest använda bränslecellerna i industrin är Protonbytesmembranbränslecell (PEMFC). PEMFC är mycket lämplig för transportindustrin tack vare sin höga effekttäthet, men även för elproduktion i en stationär tillämpning. Detta forsknings- och utvecklingsprojekt passar in i sammanhanget med att minska förorenande utsläpp och utvecklingen av vätgaslösningar för en renare rörlighet. För närvarande finns det på marknaden bara stackar med cirka hundratals kilowatt. För att öka effekten till högre nivåer, utan att utveckla nya stackar, måste multistacksystem utformas. PEMFC multistackmodeller på cirka en megawatt utvecklades i Amesim, en 0/1D-modelleringsprogramvara, för att hitta de bästa arkitekturerna för hjälpsystemen, enligt flera kriterier. Flera konfigurationer studerades, främst: motströms- och medströmsflödeskonfiguration, serie- och parallellkonfiguration på anodsidan, och serie-, parallelloch dubbelkonfiguration på katodsidan. Enligt de Amesim-simuleringar som utfördes visade sig den parallella konfigurationen på både anod- och katodsidan vara den mest effektiva, tillsammans med konfigurationen med motströmsflöde. Inverkan av att öka antalet stackar undersöktes också och fem stackar per kompressor ansågs vara en lämplig lösning.

Place, publisher, year, edition, pages
2024. , p. 57
Series
TRITA-EECS-EX ; 2024:80
Keywords [en]
Proton Exchange Membrane Fuel Cell, Hydrogen, Pump, Compressor, Cooling, Heat transfer, Amesim
Keywords [sv]
Protonbytesmembranbränslecell, Väte, Pump, Kompressor, Kylning, Värmeöverföring, Amesim
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-351570OAI: oai:DiVA.org:kth-351570DiVA, id: diva2:1887798
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Available from: 2024-08-12 Created: 2024-08-09 Last updated: 2024-08-12Bibliographically approved

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