具軟切換之雙向直流/直流轉換器研製

本論文主要在研製一個具有軟切換之非隔離型雙向直流/直流轉換器。在過去的研究，具有雙向軟切換的隔離型雙向轉換器已被廣泛發表，且控制方式多為相移控制或是用脈波頻率調變。本論文提出使用脈波寬度調變控制的非隔離型雙向直流/直流轉換器，轉換器用一個主動式緩振器使主開關具有零電壓切換的特性。論文首先說明轉換器的操作原理，接著分析與設計電路。最後，實作一部1kW之硬體電路來驗證此轉換器之可行性。

關鍵字

雙向直流/直流轉換器；緩振器；軟切換

並列摘要

This thesis presents design and implementation of a non-isolated bidirectional DC/DC converter with soft-switching features. In past studies, isolated bidirectional converters with soft-switching features have been widely present, and controlled by phase-shift control or pulse-frequency modulation. In this thesis, a non-isolated bidirectional DC/DC converter controlled by pulse-wide modulation is proposed. The converter is equipped with an active snubber, which can achieve zero-voltage-switching features. The operational principle of the proposed converter is first described, and its analysis and design are then presented. Finally, a 1kW prototype has been implemented, from which measured results have verified the feasibility of this circuit.

並列關鍵字

Bidirectional DC/DC converter ； Snubber ； Soft-switching

參考文獻

[2]H. Levy, I. Zafrany, G. Ivensky and S. Ben-Yaakov, “Analysis and evaluation of a lossless turn-on snubber,” in Proc. IEEE APEC, 1996, pp. 757-763.

[3]B. T. Irving and M. M. Jovanovic, “Analysis, design, and performance evaluation of flying-capacitor passive lossless snubber applied to PFC boost converter,” in Proc. IEEE APEC, pp. 757-763, 2002.

[4]K. M. Smith and K. M. Smedley, “Engineering design of lossless passive soft switching methods for PWM converters-Part I：with minimum voltage stress circuit cells,” IEEE Trans. on Industrial Electronics, vol.16, pp. 336-344, May 2001.

[5]X. Wu, X. Jin, L. Huang and G. Feng, “A lossless snubber for DC/DC converters and its application in PFC,” in Proc. IEEE IPEMC, pp. 1144-1149, 2000.

[6]C. J. Tseng and C. L. Chen, “A passive lossless snubber cell for nonisolated PWM DC/DC converters,” IEEE Trans. on Industrial Electronics, vol.45, pp. 593-601, Aug.1998.

國際替代計量

具軟切換之雙向直流/直流轉換器研製

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