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Contribution to the development of a fuel cell management system

Abstract : The essential challenge in using renewable energy-based electricity generation is the intermittency of resources. Therefore, new ways to store electricity is inevitable. Hydrogen as an energy carrier can deal with this issue. Hydrogen can be produced by using the excess energy of renewable energy sources. Therefore, a Polymer Electrolyte Membrane Fuel Cell (PEMFC) as a device that can directly convert hydrogen energy to electricity is an important part of this solution. The cost and durability are the major challenges to enable the diffusion of this technology in the mass market. In the frame of a multi-vectors microgrid, a Fuel Cell Management System (FCMS) is proposed and designed in this thesis that allows optimizing the reliability and life of PEMFCs through controlling the operating condition of cells to avoid electrochemical instabilities. A proposed diagnostic method along with a new hybrid power electronics architecture is the core of this FCMS. The diagnostic method can detect most of the FCMS instabilities by a new comprehensive real-time model. This model can simulate a cell in its stack environment. A hybrid power electronics architecture is developed for this FCMS that guarantees better aging of the system by separately manipulating the supplied power of cells. The proposed power electronics architecture is hybridized by a Supercapacitor (SC) that can compensate for the low dynamic of PEMFCs in supplying the fast dynamic load profiles. A Fuzzy Logic Control (FLC) method is developed as a part of the FCMS to change the reference power of the cell groups based on the model data. The proposed system and its different parts are validated through the simulation and experimental results.
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https://hal.univ-lorraine.fr/tel-02881219
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Submitted on : Thursday, June 25, 2020 - 2:55:15 PM
Last modification on : Monday, March 29, 2021 - 4:03:13 PM
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  • HAL Id : tel-02881219, version 1

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Milad Bahrami. Contribution to the development of a fuel cell management system. Engineering Sciences [physics]. Université de Lorraine, 2020. English. ⟨NNT : 2020LORR0025⟩. ⟨tel-02881219⟩

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