Improved Stability Based on Lyapunov-Hamiltonian Control Law for Multi-Segment Converters in DC Microgrids Interconnections

Authors

Phatiphat Thounthong, Tatapong Phondee, Wuttikai Tammawan, Burin Yodwong, Nicu Bizon, Gianpaolo Vitale, Serge Pierfederici, Babak Nahid-Mobarakeh, Pongsiri Mungporn

Abstract

This paper presents a robust control strategy for enhancing the large-signal stability of DC microgrids with interconnected multi-segment converters. An improved Lyapunov-Hamiltonian Control Law (LHCL) is proposed to regulate the dynamic behavior of interleaved Boost/Buck converters supplied by fuel cells. By exploiting port-Hamiltonian modeling and integrating Lyapunov-based damping, the controller dynamically adapts to varying load conditions, particularly under challenging constant power load (CPL) scenarios. The proposed method ensures global stability by shaping energy flow and minimizing oscillations through analytically derived damping terms. Experimental validation on a test bench equipped with a real-time dSPACE controller demonstrates the superior performance of the LHCL approach under both constant resistance and CPL disturbances. The results confirm the method’s effectiveness in maintaining voltage stability, achieving current balancing, and ensuring robust energy management in DC microgrid interconnections.

Citation

• Journal: 2025 7th International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)
• Year: 2025
• Volume:
• Issue:
• Pages: 348–353
• Publisher: IEEE
• DOI: 10.1109/icecie66637.2025.11363760

BibTeX

@inproceedings{Thounthong_2025,
  title={{Improved Stability Based on Lyapunov-Hamiltonian Control Law for Multi-Segment Converters in DC Microgrids Interconnections}},
  DOI={10.1109/icecie66637.2025.11363760},
  booktitle={{2025 7th International Conference on Electrical, Control and Instrumentation Engineering (ICECIE)}},
  publisher={IEEE},
  author={Thounthong, Phatiphat and Phondee, Tatapong and Tammawan, Wuttikai and Yodwong, Burin and Bizon, Nicu and Vitale, Gianpaolo and Pierfederici, Serge and Nahid-Mobarakeh, Babak and Mungporn, Pongsiri},
  year={2025},
  pages={348--353}
}

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References

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