高效率LLC諧振式電源供應器電路設計與分析

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姓名

許建隆(Chien Lung) 查詢紙本館藏

畢業系所

電機工程學系在職專班

論文名稱

高效率LLC諧振式電源供應器電路設計與分析
(Analysis and Circuit Design for High Efficiency LLC Resonant Switching Power Supply)

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摘要(中)

本論文提出對高效率LLC 諧振式轉換器之設計及基礎概念，並且在LLC諧振與同步整流之間做時序上連結，以降低暫態電壓與逆電流，進而可降低元件損失。為了接近市場應用，提出目前業界常使用之規格，以期在實際運用面得到發揮，讓高效率轉換器更能接觸到生活中，達成節能減碳之目的。本文所提出之利用同步整流線路可降低二次側流過大電流情況下之導通與切換損失，並且與高效率LCC諧振做時序上連結，以提升轉換器整體效率，因此，時序控制對電源供應器是相當重要的課題。最後，文中將依據電路分析設計與相關實務考量，製作一個具同步整流與LLC諧振雙變壓電源供應器，再藉由硬體量測結果驗證其效能及可行性，以符合實際商品化之高效率電源供應器。

摘要(英)

In this thesis, the basic concepts and designed guide lines of LLC resonant converter, the link on the timing between resonant and synchronous rectification to reduce the transient voltage and reverse currents and in turn decreasing the component losses are discussed. Moreover, for the purpose of market applications, the most commonly used specifications of the switching power supplies are discussed in order to introduce the high efficiency convertor products to the vast users to achieve the goals of energy saving and carbon reduction. Furthermore, the high conduction and switching losses due to high current can be reduced through the secondary side synchronous rectifier circuit. In addition, the link on the timing between resonant and synchronous rectification can reduce the transient voltage and reverse currents and in turn decreasing component losses. Thus, the efficiency of the switching power supplies can be improved. Finally, for practical applications, a LLC resonant converter with synchronous rectifier and parallel transformers has been built. The designed performance, feasibility and commercialization of the proposed high efficiency power supply can be verified effectively from the experimental measurements.

關鍵字(中)

★ LLC諧振式
★ 同步整流
★ 電源供應器零件選用
★ 電源供應器時序
★ 高效率電源供應器

關鍵字(英)

★ power supply timing
★ power supply specifications
★ synchronous rectifier
★ LLC resonant
★ high efficiency power supply

論文目次

中文摘要 I
英文摘要 II
誌謝 III
目錄 V
圖目錄 IX
附錄圖目錄 XII
表目錄 XV
附錄表目錄 XVII
符號說明 XVIII
第一章緒論 1
1.1研究背景 1
1.2研究動機 3
1.3交換式電源供應器的電路圖種類 5
1.4本文內容 10
1.5本文貢獻 11
第二章電源供應器規格 12
2.1電源供應器輸入電壓 12
2.2電源供應器輸出電壓 14
2.3電源供應器效率 16
2.3.1 80PLUS認證 16
2.3.2輔助電源轉換效率規範 17
2.4電源供應器時序 18
2.5電源供應器保護機制 20
第三章LLC諧振式轉換器工作原理分析設計 24
3.1 LLC諧振的工作原理 24
3.2 LLC諧振的電感性與電容性之邊界之條件 31
3.3 LLC諧振的工作時序 32
3.4 LLC諧振各式接法 41
3.5 LLC諧振的優點 44
3.6 LLC諧振的漏感與電容參數選用 46
3.7 LLC諧振的變壓器設計 48
3.8 LLC諧振的雙變壓器設計 52
3.9 LLC諧振與同步整流整合工作時序 55
3.10 LLC諧振的電路與時序設計 60
第四章 900W LLC諧振轉換器零件表與實體測試 61
4.1 900W LLC諧振式零件表 61
4.2 900W LLC諧振式轉換器實體測試 62
第五章結論與未來展望 67
5.1結論 67
5.2未來展望 68
參考文獻 70
附錄 74
附錄1.1如何減少損失基礎概念 74
附錄1.2效率計算方式 79
附錄2.1電源供應器方塊圖 83
附錄2.2電磁干擾 84
附錄2.3輔助電力 89
附錄2.4電源供應器功因校正 91
附錄2.5主電源供應器選用目的 97
附錄2.6同步整流單元 107
附錄2.7保護控制單元 109
附錄3.1電壓和電流調變 110
附錄3.2基礎線路使用 112
附錄3.3以MCU為基礎保護與電壓電流資訊偵測使用 114
附錄4.1 零件選用 115
附錄4.1.1保險絲選用 115
附錄4.1.2 EMI Cores選用 117
附錄4.1.3 X電容與Y電容選用 118
附錄4.1.4橋式整流器 119
附錄4.1.5變壓器鐵心材質 121
附錄4.1.6變壓器規格 122
附錄4.1.7功率MOSFET選用 123
附錄4.1.8 LLC IC規格 125
作者簡歷 130

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指導教授

林法正(F. J. Lin)

審核日期

2012-1-31

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