本文主旨在研製與分析一型可適用於多組並聯之直流升壓轉換器及其控制法，並以固態氧化物燃料電池50 kW電力系統為設定應用環境。其中以12組5 kW電流饋入隔離型直流-直流升壓轉換器為電路架構基礎，並以比例積分控制架構實現電流閉迴路與多模組均流控制。首先分析隔離型直流升壓轉換器模型，進一步探討控制策略，之後使用模擬軟體PSIM建立完整的隔離型直流升壓轉換器並模擬實驗其可行性作為參考依據。為符合研究目標，本文使用5 kW之 180 V升750 V直流轉換器規格，以對應於高溫固態氧化物燃料電池電力系統之直流升壓與交流逆變器之需求。本文以上述規格之轉換器用於分析模擬，並通過選用實際元件參數之運算得以驗證本文介紹之轉換器功能與損耗，可得單組直流升壓轉換器效率95.98%，已被計算證實於文中，且經由結果證明本文所提隔離型直流升壓轉換器之可行性。

This thesis presents the research and analysis a type of isolated step-up converter and control method that can be applied to multiple modules of parallel. 50 kW power convert used for solid-oxide fuel cell has been selected as a hypothetical application environment. Therefore, the 5 kW isolated DC-DC current-fed step-up converter is the basis of the circuit topology. The closed loop current control and multi-module current sharing control are realized by the proportional integral control technique. First, the model of the start of implement is to analysis the model of isolated DC-DC step-up converter is analyzed, and the control strategy is further explored. Then, the simulation software PSIM is used to model the converter and the feasibility of the simulation is evaluated for reference. For reaching the studied objectives, this thesis uses the specification of 5 kW and 180 V to 750 V DC is adopted in this thesis to implement the step-up converter and meet inverter requirements of solid-oxide fuel cell power systems. Finally, the functionality and power loss of the converter described in this thesis are verified through the calculation of using relevant component parameters. The system efficiency of 95.98% for each converter has been verified, and the results prove the feasibility of the proposed isolated DC-DC step-up converter.

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