本論文主旨為研究雙主動全橋式轉換器於車用充電裝置之應用，並深入分析雙主動全橋式轉換器架構於寬範圍調壓之優劣，其中分別探討不同相移控制法對改善轉換器表現之成效。最終考量其相移控制之複雜度，故選擇雙重相移控制並應用最小峰值電流控制法，達到減少切換損失以及改善輕載效率等成效。
考量現今電動車規範等相關之規格參數，於最終實際完成一台輸入電壓為750 Vdc、輸出電壓為400 Vdc至500 Vdc以及輸出功率10 kW的直流-直流雙主動全橋式轉換器。功率級主要包含一雙主動全橋式轉換器，藉由偵測輸出電壓作為控制器主要回授之變量，並利用輸入電壓計算輔助之相移角度，以減小峰值電流與切換損失等，並以數位訊號控制器來實現閉迴路控制。經由實驗結果顯示轉換器在不同輸出電壓之條件下，所採用之相移調變法能有效提升輕載以及轉換器整體效率，且在不同的負載下之效率均在90%以上。

The purpose of this paper is to study the application of dual active bridge converter in a wide range of step-up and step-down situation and analyze its advantages and disadvantages of the structure and different phase shift control method for the electric vehicle. After considering the benefit and complexity of different phase shift control, the dual-phase-shift control with minimum peak current control method was selected to improve light-load efficiency and reducing the switching loss. The output and input voltage were the main feedback variables in the closed-loop control. The experimental results show that the dual-phase-shift modulation method used by the converter under different output voltages can effectively improve the overall efficiency of the converter.

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