Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

Yihui Zhao; Limin Jia

doi:10.1117/12.3030121

5 June 2024 Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid

Yihui Zhao, Limin Jia

Proceedings Volume 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024); 1316352 (2024) https://doi.org/10.1117/12.3030121
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 2024, Xi'an, China

Abstract

In the isolated DC microgrid, the power deviation between the system source loads needs to be balanced by the energy storage unit, and the state of charge of the energy storage becomes the key to the long-term stable operation of the isolated DC microgrid. By analyzing the characteristics of the electro hydrogen coupling unit, a multi-source coordinated control strategy based on DC bus voltage deviation is proposed. The control strategy takes the battery as the core of voltage regulation, and realizes the coordinated operation of electricity and hydrogen by detecting the voltage fluctuation of the DC bus at the converter port, so as to maintain the power balance of the system. In order to avoid battery shutdown due to excessive charging state, a multi-source adaptive droop controller considering energy storage SoC is designed, which makes the output of hydrogen energy unit actively respond to the change of SoC, reduces the unbalanced power caused by battery SoC management, inhibits the speed of SoC approaching the boundary value, and realizes the dynamic balance of SoC. The effectiveness of the proposed control strategy is verified in MATLAB/SIMULINK.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yihui Zhao and Limin Jia "Multi source coordinated control strategy for electric hydrogen coupling isolated DC microgrid", Proc. SPIE 13163, Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024), 1316352 (5 June 2024); https://doi.org/10.1117/12.3030121

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