本論文旨在研製電動船舶之高功率雙向直流-直流轉換器模組，應用於電池與直流匯流排間能量轉換。模組架構分為兩級電路，電池端架構為雙向降/升壓型轉換器，於直流匯流排端架構為全橋串聯式諧振轉換器所組成。藉由將雙向直流-直流轉換器應用於船舶電源系統，可利用於電池端與直流匯流排端進行充/放電，來調整雙向功率傳輸。
本文除了實際建構雙向直流-直流轉換器模組，並探討降/升壓型轉換器及全橋串聯諧振轉換器，且完成完整之設計準則。最後實作一部15kW實體模組電路，輸入/出電壓規格皆為400~750伏特，使用數位信號處理器TMS320F28035來實現數位控制。在不同的負載下，整體轉換效率達到93%以上。

In this thesis, a high power bi-directional DC-DC converter module for electric ships is studied and implemented, to be used for energy conversion between battery and DC bus. The module consists of two-stage circuits: a bi-directional buck/boost converter at battery side and a full-bridge series resonant converter at DC bus side. The developed bi-directional DC-DC converter module can be applied to the electric ship power system for charging/ discharging between battery and DC bus and adjusting bidirectional power transfer.
In addition to establish a bi-directional DC-DC converter module and to discuss the bi-directional buck/boost converter and the full-bridge series resonant converter, the design criterions have been found. A 15 kW prototype module with circuit specifications of 400 V to 750 V input and output voltages was implemented and tested. A digital signal processor TMS320F28035 is used to realize the digital controller. According to the experimental results, the overall conversion efficiency can be up to 93%.

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