本論文旨在研製一高效率雙向轉換器，以利減少充放電系統之整體體積，且可應用在鉛酸電池上，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(Digital Signal Processor, DSP)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 ~ 46 V、輸出200 V、最大轉換功率為1.3 kW，實測後最高轉換效率為93.8 %；在降壓模式下的規格為：輸入200 V，輸出則以電子負載取代鉛酸蓄電池，並設計為二階段定電流/定電壓充電，最大轉換功率為900 W，實測後最高轉換效率為94.6 %。

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 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 46 V. The output voltage is 200 V. The maximum output power is 1.3 kW. And the highest recorded efficiency is 93.8%. As for the charging (buck) mode, the input voltage is 200 V. An electronic load is used to replace the lead-acid batteries for testing the two-stage constant-current (CC)/constant voltage (CV) charging scheme. The rated output power is 900 W. And the highest measured efficiency is 94.6%.

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