諧振電容控制之LLC諧振轉換器設計與實現

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姓名

陳?龍(Jyue-Long Chen) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

諧振電容控制之LLC諧振轉換器設計與實現
(Design and Implementation of Resonant Capacitor Controlled LLC Resonant Converter)

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摘要(中)

本論文主要研製一具功率因數修正之半橋LLC諧振轉換器，傳統LLC諧振轉換器具有輕載效率較低的問題，此問題通常會採用Burst-mode來解決，但使用Burst-mode解決輕載效率較低的問題會有輸出漣波大、噪音、動態響應差等問題，所以本論文使用諧振電容控制來達到輕載效率改善的效果；此外，此控制方法也可用於延長維持時間。最後，本論文實作出一台300W之AC/DC電源供應器，其輸入電壓為90 ~ 264 Vac，輸出電壓50 Vdc，滿載輸出電流6 A，整體平均功因達0.94以上，平均效率可達90%，最高效率達93%，相關實驗結果驗證所設計之具功率因數修正之諧振電容控制之半橋LLC諧振轉換器具有改善輕載效率及延長維持時間之效果。

摘要(英)

This thesis focuses on the design and implementation of a half-bridge LLC resonant converter with power factor correction. The traditional LLC resonant converter suffer from the problem of poor light-load efficiency. Burst-mode is usually used to solve this problem, but Burst-mode has problems like large output voltage ripple, acoustic noise, poor dynamic response. This thesis proposes a resonant capacitor controlled LLC resonant converter to improve light-load efficiency. In addition, this control method can be used to extend hold-up time. Finally, this thesis implements a 300W AC/DC power supply. The input voltage range is 90 ~ 264V_ac, the output voltage is 50V_dc, and the output current is 6 A at full-load. The overall average power factor is more than 0.94. The average efficiency is 90%, and the highest efficiency is 93%. Finally, the relevant experimental results verify that the designed resonant capacitor controlled half-bridge LLC resonant converter with power factor correction has the effect of improving light load efficiency and extending the hold-up time.

關鍵字(中)

★ LLC諧振轉換器
★ 升壓型功率因數修正器
★ 諧振電容控制
★ 輕載效率改善
★ 延長維持時間

關鍵字(英)

★ LLC resonant converter
★ boost power factor corrector
★ resonant capacitor control
★ light-load efficiency improvement
★ extend hold-up time

論文目次

摘要 i
Abstract ii
誌謝 iii
目錄 iv
圖目錄 vii
表目錄 xi
第一章緒論 1
1-1前言 1
1-2研究動機與目的 2
1-3文獻回顧 3
1-4內容大綱 5
第二章功率因數修正器之原理 6
2-1功率因數之定義 6
2-2功率因數修正器之電路架構 9
2-3升壓型功率因數修正器之電路分析與設計 10
2-4升壓型功率因數修正器之控制方法 14
第三章 LLC諧振轉換器之原理與分析 17
3-1開關的切換損失 17
3-2電路架構 18
3-3動作原理 21
3-4特性分析 29
3-4-1電壓增益函數分析 30
3-4-2 K值、Qe值對電壓增益的影響 34
3-4-3輕載效率低下分析 39
3-4-4 K值與效率及維持時間的取捨 41
第四章諧振電容控制分析 42
4-1輕載效率改善原理 42
4-2維持時間延長原理 44
第五章整體電源轉換器之設計 45
5-1 升壓型功率因數修正器電路規格設計 46
5-1-1升壓型功率因數修正器之元件參數設計 47
5-1-2升壓型功率因數修正器之PSIM模擬 50
5-2 LLC諧振轉換器電路規格設計 52
5-2-1 LLC諧振轉換器之元件參數設計 54
5-2-2 LLC諧振轉換器之PSIM模擬 63
第六章實驗結果與討論 65
6-1 升壓型功率因數修正器之波形 66
6-2 半橋LLC諧振轉換器之波形 71
6-3 整體電源轉換器之數據量測 79
6-4 整體電源轉換器之損失分析 83
第七章結論與未來展望 84
參考文獻 85

參考文獻

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ELECTRONICS LETTERS 2nd March 2017 Vol. 53 No. 5 pp. 339–341.

指導教授

徐國鎧(Kuo-Kai Syu)

審核日期

2018-7-24

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