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    Improved Passivity-Hamiltonian Control Law for Multi-Stack Fuel Cell System for DC Microgrid Applications
    (2025-01-01)
    Yodwong, Burin
    ;
    Mungporn, Pongsiri
    ;
    Khumfoi, Surin
    ;
    Vitale, Gianpaolo
    ;
    Pierfederici, Serge
    Proton Exchange Membrane Fuel Cells (PEMFCs) are gaining a lot of attention in sustainable energy systems, particularly in high-power applications by using Multi-Stack Fuel Cell Systems (MFCS). When integrated into DC microgrids, MFCS offer enhanced efficiency and stability but face challenges due to constant power loads (CPLs) and nonlinear dynamics. This paper proposes an Improved Passivity-Hamiltonian Control Law (PHCL). The control design integrates adaptive damping, multi-integral compensation, and Lyapunov-based stability to achieve robust DC-link voltage regulation and balanced current sharing among stacks. A novel integral scheme further ensures equal power distribution despite voltage mismatches or degradation. The proposed approach is validated experimentally on a hardware platform comprising two PEMFC stacks interfaced with boost converters. These obtained results confirm the robustness and practicality of the improved PHCL for MFCS-based DC microgrid applications
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    Hamiltonian-Differential Flatness Control Laws for Battery/Ultracapacitor for Hybrid Electric Vehicle Applications
    (2023-01-01)
    Mungporn, Pongsiri
    ;
    Khomfoi, Surin
    ;
    Inteeworn, Ridtee
    ;
    Gonmanee, Apinun
    ;
    Pierfederici, Serge
    This paper introduces the Hamiltonian-differential flatness control laws specifically designed for battery and ultracapacitor (UC) hybrid vehicle systems. The main goal of these control laws is to effectively manage power flow and optimize energy utilization in hybrid systems combining batteries and UC. The proposed control laws use Hamiltonian control and differential flatness techniques to dynamically regulate the energy distribution between the battery and UC, particularly in the context of constant power load (CPL) challenges within DC Microgrid applications, including vehicle systems. To confirm the efficiency of the proposed control strategy, the experimental test bench has been set up with a Li-ion battery module (LFeLi-48100TB, 48 Vdc, 100 Ah) and a UC module with a capacitance of (188.88 F, 51.3 V.) Finally, the experimental results confirm the exceptional performance of the studied control law throughout the load-drive cycles.