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研究生:余宜璋
研究生(外文):Yi-Chang Yu
論文名稱:具輕載高效率之LLC諧振式電源設計與實現
論文名稱(外文):High Efficiency Design for Converters under Light Load
指導教授:徐國鎧
學位類別:碩士
校院名稱:國立中央大學
系所名稱:電機工程學系在職專班
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2016
畢業學年度:104
語文別:中文
論文頁數:79
中文關鍵詞:輕載高效率LLC諧振電源3脈衝型式控制
外文關鍵詞:high efficiency under light loadLLC converters3 pulse patter
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本論文旨在研究和解決電源於輕載時,效率非最佳化的問題。
一般電源供應器設計考量以最重載為主。但實際實用上,大部份時間,電源操作在中載或輕載,如PC 500W的電源,大部份時間操作於130~250W,而愈輕載操作時,其效率將愈低。
為解決輕載和中載也能提高其效率的問題,傳統的解決方式會採用突變模式控制,來降低切換損失並改善效率,然而傳統的突變模式會導致輸出不穩定、輸出漣波過大和輕載效率非最佳化。
因此本文採用了非導通時間調變來降低輸出漣波過大的問題,並利用了3脈衝模式控制來解決輸出不穩定並優化輕載的效率,並以NXP1916實作出此驅動器,實現輕載高效率的電源供應器。

This thesis aims to study and solve the power supply efficiency problem that occurs during non-optimization usage.
The power supply design was built for full load power, however most of the time the power contained in the operation is light load or middle load. For example, a PC 500W power supply often operates at 130 ~ 250W. Therefore, if the power supply is not running at or near full capacity, the level of efficiency is not satisfactory.
To solve the light load and the middle load issues, designers generally use mutation mode control to reduce switching losses and improve efficiency. Although, traditional mutation patterns can lead to unstable output. The output ripple is too large when using mutation mode control, and light-load efficiency is not optimized.
This article is a non-conductive time modulation study focused on reducing the problem of oversized output ripples and the use of the three-pulse mode control to fix unstable output and optimize light load efficiency.
In this particular thesis we utilize the PSU component NXP1916 to verify that the light load improves efficiency.

目 錄
中文摘要…………………………………………………………………I
英文摘要…………………………………………………………………II
誌謝………………………………………………………………………III
目錄………………………………………………………………………IV
表目錄……………………………………………………………………VI
圖目錄……………………………………………………………………VII
第一章 緒論……………………………………………………………1
1-1 研究動機與目的……………………………………………………1
1-2 文獻回顧……………………………………………………………2
1-3 內容大綱……………………………………………………………3
第二章 LLC諧振式架構說明及推導……………………………………5
2-1 前言…………………………………………………………………5
2-2 2L1C和2C1L拓樸比較………………………………………………5
2-2-1 LLC和CLL…………………………………………………………5
2-2-2 LCC和HSPRC………………………………………………………8
2-3 LLC與SRC關係說明…………………………………………………8
2-4 LLC操作頻段分析說明………………………………………………9
2-5 LLC諧振式增益分析………………………………………………11
2-6 LLC諧振式數學推導………………………………………………16
2-6-1 不連續導通模式DCM公式推導…………………………………16
2-6-2 臨界導通模式BCM公式推導……………………………………24
2-6-3連續導通模式CCM公式推導………………………………………28
2-7 非理想變壓器之修正………………………………………………31
第三章 輕載高效率之控制方法………………………………………32
3-1 前言…………………………………………………………………32
3-2 突變模式(Burst Mode)…………………………………………32
3-3脈衝省略模式(Pulse Skipping)………………………………33
3-4 非導通時調變(Off Time Modulation)………………………34
3-5 3脈衝調變模式(3-Pulse pattern)……………………………34
第四章 LLC諧振式電源設計與實現……………………………………37
4-1 前言…………………………………………………………………37
4-2 LLC諧振式電源設計流程…………………………………………37
4-3 LLC諧振式電源設計………………………………………………37
4-4 頻率調變控制策略…………………………………………………41
4-5 輕載高效率之LLC電源實現………………………………………42
4-6 實驗數據量測………………………………………………………46
第五章 結論與未來研究規劃…………………………………………62
5-1 結論…………………………………………………………………62
5-2 未來研究規劃………………………………………………………62
參考文獻………………………………………………………………R-1
作者簡歷………………………………………………………………R-3
[1] Chao Fei; Fred C. Lee; Qiang Li, “Light load efficiency improvement for high frequency LLC converters with Simplified Optimal Trajectory Control (SOTC) ,” IEEE Transactions on Industry Applications, vol. 46, no. 1, 2015.
[2] Yiqing Ye; Chao Yan; Jianhong Zeng; Jianping Ying, “A novel light load solution for LLC series resonant converter,” INTELEC 07 - 29th International Telecommunications Energy Conference, 2007.
[3] Ching-Ming Lai; Rong-Chyang Lee; Te-Wei Wang; Kuo-Kai Shyu, “Design and Implementation of a Single-Stage LLC Resonant Converter with High Power Factor,” IEEE International Symposium on Industrial Electronics, 2007.
[4] Lijun Hang; Zhengyu Lu; Zhaoming Qian, “Research of Digital Control Strategy for Multi-Resonant,” IEEE International Symposium on Industrial Electronics, 2007
[5] Yu Fang; Dehong Xu; Yanjun Zhang; Fengchuan Gao; Lihong Zhu; Yi Chen, “Standby Mode Control Circuit Design of LLC Resonant Converter,” IEEE Power Electronics Specialists Conference, 2007
[6] Jee-hoon Jung; Joong-gi Kwon, “Theoretical analysis and optimal design of LLC resonant converter,” Power Electronics and Applications, European Conference, 2007
[7] Teng Liu; Ziying Zhou; Aiming Xiong; John Zeng; Jianping Ying, “A Novel Precise Design Method for LLC Series Resonant Converter,” INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference, 2006
[8] Xing Tan; Xinbo Ruan, “Equivalence Relations of Resonant Tanks: A New Perspective for Selection and Design of Resonant Converters,” IEEE Transactions on Industrial Electronics, Vol. 63, no. 4, pp. 2111 – 2123, 2006
[9] 林伯仁 校訂,交換式電源供應器設計與最佳化,全華科技圖書,2007年三月。
[10] 梁適安,交換式電源供應器之理論與實務設計,全華科技圖書,2001年9月。
[11] 王順忠,電力電子學,東華書局,民國87年2月。
[12] Ned Mohan; Tore M. Undeland; William Robbins, Power Electronics converters Applications and Design ,3th Edition. JOHN WILEY & SONS INC., 2003
[13] W. Chen; J.A Sabate; M.M. Jovanovic ; F.C. Lee, “Zero-Voltage-Switching Full Bridge PWM Converters,” VPEC seminar proceedings Sept.11-13,1994
[14] Robert W. Erickson, Fundamentals of Power Electronics, Kluwer Academic Publishers Group,1997
[15] Nilsson; Riedel, Electric Circuits ,9th Edition, Pearson,2011

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