本論文旨在研製一應用於鉛酸電池之高效率雙向轉換器，以利減少充放電系統之整體體積，並加入以返馳式轉換器為架構之主動箝位電路，增加系統可靠度，其雙向轉換器之動作原理與設計上的考量在本論文皆會詳述。此雙向轉換器使用數位信號處理器晶片TMS320F28035實現數位控制。
本文所設計實作之雙向轉換器，在升壓模式下的規格為：輸入40 V ~ 50 V、輸出200 V、最大輸出功率為1.3 kW，實測最高轉換效率為94.1 %；在降壓模式下的規格為：輸入200 V，並設計為二階段定電流/定電壓充電輸出，最大輸出功率為600 W，實測最高轉換效率為94.5%。

This thesis aims to study and design a high-efficiency bi-directional converter which can reduce the overall volume of a charger-discharger system for lead-acid battery. In addition, there is a Flyback snubber in the system that can increase the reliability. The operating principles and design issues of the presented bi-directional converter are described in detail. The digital control is fulfilled with the TMS320F28035 DSP chip.
For the implementations of the discussed bi-directional converter, the circuit parameters in discharging (boost) mode are as follows. The input voltage range is from 40 V to 50 V. The output voltage is 200 V. The maximum output power is 1.3 kW. And the highest recorded efficiency is 94.1%. As for the charging (buck) mode, the input voltage is 200 V. The two-stage constant-current (CC)/constant voltage (CV) charging scheme is designed. The rated output power is 600 W. The highest measured efficiency is 94.5%.

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