本篇論文主要研製交錯式二次側諧振槽串聯諧振轉換器。一般傳統串聯諧振轉換器不適合低壓輸入、高壓輸出之應用，因此本文將諧振槽置於變壓器二次側，可改善諧振元件因特性阻抗Zo過小而設計不易之問題。且利用並聯雙組二次側諧振槽串聯諧振轉換器，加上控制驅動信號相移90°的機制，可有效降低輸入電流漣波，以及選擇規格較低之功率開關元件，而達到節省成本的目的。
內文先分析傳統串聯諧振轉換器與二次側諧振槽串聯諧振轉換器的工作原理，並比較兩者電路架構的優缺點，其次分析交錯式二次側串聯諧振轉換器的工作原理、探討諧振槽的參數對電路架構的影響，進而最佳化設計電路元件，最後實現2 kW的原型電路，規格為輸入電壓12 V、輸出電壓200 V，整機量測達到高效率要求規範。

This thesis focuses on the study and implementation of an interleaved series resonant converter (SRC) with a secondary-side resonant tank. The conventional SRC is not suitable for low input voltage and high output voltage applications. The presented SRC with a secondary-side resonant tank can solve the resonant component design problem resulted from the too small characteristic impedance (Zo). Two SRCs are connected in an interleaved way with a 90 phase shift between the gating signals. The input current ripple can be reduced. The device ratings can also be reduced for cost saving.
First, the operating principles of the SRC circuits with primary-side and secondary-side resonant tanks are analyzed respectively in details. The advantages and disadvantages of these two topologies are discussed and compared. Then, an interleaved SRC circuit with a secondary-side resonant tank is analyzed and designed to achieve high-efficiency performance. Finally, a 2-kW laboratory prototype with a 12-V input and a 200-V output is realized and tested to verify the feasibility of the studied scheme.

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