高效率雙向直流轉換器的研製

Design and Implementation of a High Efficiency Bidirectional DC/DC Converter

林詠凱(Yong-Kai Lin)

指導教授 ： 賴炎生

國立臺北科技大學/機電學院/電機工程系所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00031

摘要

本論文之目的在於研製一高效率的雙向直流轉換器，此轉換器主要應用於燃料電池(或負載)與蓄電池之間而且具有雙向能量傳輸的功能。當轉換器處於降壓模式時，轉換器以定電壓的方式提供能量給負載；若轉換器的工作模式為升壓模式時，則將燃料電池或負載端的回饋能量以定電流方式對蓄電池充電。本文所研製的雙向直流轉換器其詳細規格包含額定功率：500 W以及電壓轉換額定：24 V/ 44 V。
本論文首先探討雙向轉換器之原理與架構，其次以SIMULINK初步驗證所設計之雙向轉換器之功能，最後完成驅動電路製作。本論文以dSPACE為實驗平台而驗證雙向電源轉換器實作及設計分析是否正確。經實驗結果證實，本論文所研製之雙向電源轉換器確實可完成雙向能量傳遞功能，且轉換器效率可達90%以上。

關鍵字

雙向直流轉換器 ； 燃料電池

並列摘要

The objective of this thesis is to design and implement a high efficiency bidirectional DC/DC converter for fuel cell systems, which converts the energy from battery (or load) to fuel cell and visa versa. When the converter operates in buck mode, the power is provided by battery with constant voltage. In contrast, when the converter operates in boost mode, the battery is charged by fuel cells or regenerative energy of load with constant current. The details of the specification include:
Power rating = 1.5 kW
Voltage rating =24V/45V
First, the operation principle of bidirectional DC/DC converter is described. Then, the designed bidirectional DC/DC converter is verified by SIMULINK and the converter is realized. Moreover, the implemented bidirectional DC/DC converter controlled by dSPACE is verified by experimental results. Experimental results confirm that the energy can be converted in two directions by the implemented bidirectional DC/DC converter and the efficiency is over than 90%.

並列關鍵字

Bidirectional DC/DC Converter ； Fuel Cell

參考文獻

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