雙向準諧振返馳式充電器之研製

Design and Realization of Bi-directional Quasi-Resonant Flyback Charger

呂承恩(Cheng-En Lu)

指導教授 ： 謝冠群 ； 謝宏毅

中原大學/電機資訊學院/電機工程研究所/碩士(2020年)

https://doi.org/10.6840/cycu202000387

摘要

本文旨在研製300W雙向準諧振返馳式充電器，其架構為在高壓側與低壓側共用同一顆變壓器來達到雙向轉換之功能。雙側之間分別獨立配有定電流-定電壓迴路來進行電池充電控制。本研究所提準諧振返馳轉換器使用波谷切換方法以提升轉換效率。最後以48V降壓至12V和12V升壓至48V兩種情境進行充放電實驗和分析；並且討論鉛酸電池內部阻抗變化對應電池充放性能的關係。

關鍵字

雙向返馳式轉換器 ； 準諧振返馳式轉換器 ； 定電流充電 ； 定電壓充電 ； 鉛酸電池

並列摘要

The main purpose of this article is to develop a 300W bidirectional quasi-resonant flyback charger whose architecture is to share the same transformer on the high-voltage side and the low-voltage side to achieve the function of bidirectional conversion. Separate constant-current/constant-voltage loops are installed between the two sides to control battery charging. In this study, the quasi-resonant flybackconverter uses valley switching methods to improve conversion efficiency. Charge and discharge experiments and analysis were carried out in two cases: 48V step-down to 12V and 12V step-up to 48V. Finally, the relationship between the change of the internal impedance of the lead-acid battery and the battery's charge and discharge performance is discussed.

並列關鍵字

bidirectional flyback converter ； quasi-resonant flyback converter ； constant current charging ； constant voltage charging ； lead-acid battery

參考文獻

參考文獻

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[3] K. Yoshida, T. Ishii and N. Nagagata, "Zero voltage switching approach for flyback converter," in Proc. Fourteenth Int'l Telecommunications Energy Conf. - INTELEC '92, pp. 324-329, Washington, DC, 1992.

[4] K. Park, C. Kim, G. Moon and M. Youn, "PWM Resonant Single-Switch Isolated Converter," IEEE Trans. Power Electron, vol. 24, no. 8, pp. 1876-1886, Aug. 2009.