本論文提出用於含有再生能源發電系統及儲能系統之混合交流/直流微電網之雙向虛擬慣性控制策略，該孤島模式運轉之微電網係由風力發電系統、太陽能發電系統、雙向直流對直流轉換器以及雙向互連轉換器等設備組成，以全釩氧化還原液流電池為基礎之儲能系統經由雙向直流對直流轉換器連接至直流微電網，該直流微電網則透過雙向互連轉換器與交流微電網連接。本論文在虛擬同步機的基礎上，使用基於雙向互連轉換器之雙向虛擬慣性控制策略，分別完成直流與交流微電網之功率分配、抑制直流鏈電壓及交流側頻率之偏差量，並比較該系統於加入虛擬慣性控制前後之差異。本論文分別完成該系統架構在不同工作條件下之穩態頻域分析，並完成該系統架構在不同干擾條件下之動態與暫態時域模擬。

This thesis proposes a bidirectional virtual inertial control strategy for a hybrid AC/DC microgrid including a renewable-energy power-generation system and an energy-storage system. The studied hybrid AC/DC microgrid consists of a wind power-generation system, a photovoltaic power-generation system, a bidirectional DC-DC converter, and a bidirectional interlinking converter (BIC). The energy-storage system based on vanadium redox flow battery is connected to the DC microgrid through a bidirectional DC-DC converter, while the DC microgrid is connected to the AC microgrid through the BIC. On the basis of the virtual synchronous generator, this thesis uses the bidirectional virtual inertial control strategy based on BIC to achieve power distribution between the DC and AC microgrids, suppress the deviations of both DC-link voltage and frequency of the AC side, and compare the differences for the studied system with and without the virtual inertial control. The thesis performs the steady-state frequency-domain analysis of the studied system under different operating conditions. Both dynamic and transient time-domain simulations of the studied system under various disturbance conditions are also carried out.

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