為了研究風能、太陽能與波浪能饋送至市電或供電給獨立負載之不確定性與間斷特性，本論文提出一個含有混合風能、太陽能與波浪能發電系統之直流微電網，它是由風力發電機、太陽能陣列、波浪發電機、雙向直流對直流轉換器以及雙向直流對交流轉換器所組成，其中以超級電容器為基礎之能量儲存設備經由雙向直流對直流轉換器連接至直流微電網，且直流微電網透過雙向直流對交流轉換器與市電連接。本論文進行整合風能、太陽能、波浪能以及儲能設備至直流微電網之數學模型建立與模擬。在時域模擬中，完成該直流微電網系統的穩態響應分析，該直流微電網系統在不同運轉條件下的動態及暫態模擬也一併完成。

In order to investigate the uncertainty and intermittent characteristics of wind, photovoltaic, and wave energy resources fed to a utility grid or supplying to isolated loads, this thesis proposes a DC microgrid with an integration of wind, photovoltaic, and wave power-generation systems. The studied system consists of a wind power generator, a PV array, a wave power generator, a bidirectional DC/DC converter for connecting with a supercapacitor-based energy storage device, and a bidirectional DC/AC converter for connecting to a utility grid. The mathematical model of the studied DC microgrid with the integrated wind, photovoltaic, and wave power-generation systems is established and simulated. The steady-state responses of the studied system using time-domain simulations are performed while the dynamic and transient responses of the studied system under various operating conditions are also carried out.

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