Open AccessModelling and analysis of a synchronous machine‐emulated active intertying converter in hybrid AC/DC microgrids
Author(s) -
Alrajhi Alsiraji Hasan,
Radwan Amr Ahmed A.,
ElShatshat Ramadan
Publication year - 2018
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2017.0734
Subject(s) - converters , robustness (evolution) , electric power system , computer science , control theory (sociology) , hybrid system , inertia , engineering , renewable energy , voltage , control engineering , power (physics) , electronic engineering , electrical engineering , control (management) , artificial intelligence , biochemistry , chemistry , physics , classical mechanics , quantum mechanics , machine learning , gene
The integration of renewable energy resources into the electrical distribution systems faces several stability challenges especially in the low inertia conditions. To address these issues, this study introduces a virtual synchronous machine (VSM) control strategy for the intertying power electronic converters in the autonomous AC/DC hybrid microgrids. It is shown that the VSM‐based controller improves the system damping following the frequency disturbances and the AC/DC voltage variations. Moreover, a power management regulation topology is implemented in the active intertying converter to achieve an accurate bidirectional power flow under different loading conditions. A small‐signal state‐space model for the entire hybrid system is developed to assess the overall system performance. Time‐domain simulation results under the PSCAD/EMTDC environment are also presented to investigate the effectiveness of the proposed techniques. The introduction of the VSM control for the intertying converters in the hybrid AC/DC microgrids provides a significant improvement in the dynamic performance and increases the robustness against external disturbances.