PEMFC System integration and design optimisation of a hydrogen fuel cell battery Hybrid Electric Propulsion system

Khan, Naseruddin (2024). PEMFC System integration and design optimisation of a hydrogen fuel cell battery Hybrid Electric Propulsion system. University of Birmingham. Ph.D.

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Abstract

This thesis focuses on the topic of system integration of the polymer electrolyte membrane fuel cell (PEMFC) and design optimisation of a fuel cell hybrid electric vehicle (FCHEV) powertrain. Both of these aspects play a crucial role in the performance and sizing of components when integrated within an electric vehicle. At a system level, an optimised reactant gas management can reduce the fuel cell parasitic losses, thereby leading to an increased overall efficiency. The FCHEV powertrain design, incorporating the energy management system, involves fuel cell and battery sizing. Thus, the aim of optimising these can lead to reduced fuel consumption, system size and costs.
A 5 kW PEMFC system running on dry hydrogen with appropriately sized balance of plant was built to conduct experimental studies and analysis of the gas supply systems. A particular scrutiny in our work was on the development of a novel hydrogen purging strategy in the anode compartment of the fuel cell, based on a parameter independent of operational time. Through experimental validation, an ideal range of purging with recirculation of hydrogen was proposed. Furthermore, a model-based design strategy, employing dynamic programming methodology, was devised with the objective of optimal component sizing that can be applicable to specific powertrain configurations.

Type of Work:

Thesis (Doctorates > Ph.D.)

Award Type:

Doctorates > Ph.D.

Supervisor(s):