本論文主要研製一台應用於電池充電系統的高效率雙向隔離型直流/直流電源轉換器，以利減少充放電系統之整體體積。直流/直流轉換器電路架構則為雙向全橋SRC型串聯諧振轉換器，配合開關零電壓切換減少功率開關切換損耗，達到電路效率的提升。
本文所設計實作之雙向轉換器電路規格如下，高壓側直流電壓為750V、低壓側電壓/電流為直流15V/100A、最大轉換功率則為1.5kW。雛型電路驗證了本論文所研究的電路架構與控制方法的可行性，並符合整體規格功能，具備雙向以及隔離功能，整機最高效率能達到96%，輸出電壓漣波控制在±0.1V內，將實測結果和理論相互印證。

This thesis aims to study and design a high-efficiency bi-directional converter which can help reduce the overall volume of a charger-discharger system. The topology of this converter is Bi-directional Full-Bridge DC/DC Converter. The switches possess the turn-on with zero-voltage switching (ZVS) in order to reduce the switching losses. Reach a goal of circuit efficiency improvement.
The circuit specification are as follow: The voltage of high-voltage side is 750V. Voltage of low-voltage side is 15V and current is 100A. The maximum output power is 1.5kW. Experimental results of a prototype circuit was tested to verify the feasibility of the proposed scheme and control strategy. With bi-directional and isolated. The maximum efficiency is 96%. Output voltage ripple among ±0.1V. Theoretical analyses are verified with the experimental results.

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