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研究生:胡庭豪
研究生(外文):Ting-Hao Hu
論文名稱:一高效能300瓦LLC諧振式鉛酸電池充電器之研製
論文名稱(外文):Study and Implementation for a High Efficiency 300W Lead –Acid Battery Charger by LLC Resonant Converter
指導教授:蔡有龍蔡有龍引用關係陳宣泰黃維澤
指導教授(外文):Yu-Lung TsaiShiuan-Tai ChenWei-Tzer Huang
學位類別:碩士
校院名稱:建國科技大學
系所名稱:電機工程系暨研究所
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:2013
畢業學年度:101
語文別:中文
論文頁數:81
中文關鍵詞:硬性切換軟性切換零定壓切換零電流切換LLC諧振轉換器
外文關鍵詞:hard switchingsoft switchingzero voltage switchingzero current switchingLLC resonant converter
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傳統市售之鉛酸電池充電器雖亦為高頻切換式;但大部分均為返馳式、順向式、半橋式等硬性切換之架構。硬性切換架構因無法作零電壓、零電流切換,故切換損失極大且易造成MOSFET溫升過高。本文為改善上述傳統充電器之缺點,提出一結合同步整流之LLC諧振式轉換器架構,其MOSFET可作完全之零電壓切換,且轉換器之電流波形可幾乎接近純正弦波,故轉換效率極高,且電磁干擾(EMI)與輻射干擾(RFI)亦大幅降低。由實驗結果証實本文所提諧振式充電器效果極佳,效率最高可達94.9%,已達節約能源之目的,且亦可縮小散熱器及整體充電器之體積。此外,本文亦搭配PIC16F84之單晶片作充電監控,並可作輸出電壓之彈性切換,於實際之應用上,可以單一充電器對於多種不同電壓之電池組作定電流及定電壓充電,並可自動達到均充之效果。
Traditional commercially available lead-acid battery chargers are always designed by using high-frequency switching topologies, but the majority, such as flyback, forward, half-bridge topologies etc., are hard switching structures. Hard switching topologies can not make MOSFETs achieve zero voltage and zero current switching, so will cause high switching losses and high MOSFET junction temperature. To improve these shortcomings, this thesis proposes a high efficiency soft switching topology which incorporates LLC resonant converter with synchronous rectification. According to this resonant converter structure, MOSFETs can easily reach zero voltage switching and the current waveforms of the converter are nearly pure sine waves. As a result, the proposed converter has extremely high conversion efficiency, and also can significantly reduce electromagnetic interference (EMI) and radiation interference (RFI). The experimental results confirmed that the proposed resonant chargers with excellent results, the efficiency up to 94.9%, and reached the purpose of saving energy, and can also reduce the heat sink and the overall volume of the charger. In addition, this thesis also utilizes the PIC16F84 single chip to monitor the charging process, and to make the charger with adjustable output voltage function. In practical applications, the battery pack with different voltage can be charged by a single charger with constant current and constant voltage charging functions and automatically reaches equalization effect.
摘 要 I
Abstract II
目 錄 III
圖目錄 V
表目錄 IX
第一章 緒論 1
1.1 研究動機及目的 1
1.2 文獻探討 2
1.3 論文架構 5
第二章 鉛酸電池與充電器簡介 6
2.1 前言 6
2.2 鉛酸電池結構 7
2.3 鉛酸電池工作原理 8
2.4 鉛酸電池之充電方法 9
2.4.1 定電流充電(Constant Current, CC) 9
2.4.2 定電壓充電(Constant Voltage, CV) 10
2.4.3 定電流-定電壓充電(CC-CV) 10
2.4.4 脈衝充電 11
2.5充電器簡介 12
2.6 非隔離型轉換器 13
2.7 隔離型轉換器 14
第三章 諧振轉換器 16
3.1切換損失 16
3.2 諧振式轉換器 17
3.2.1 串聯諧振轉換器 18
3.2.2 並聯諧振轉換器 20
3.2.3 串並聯諧振轉換器 22
3.2.4 LLC諧振轉換器 24
3.3 LLC諧振轉換器的工作原理 26
3.3.1 IC L6599介紹 32
3.4 同步整流電路 33
3.4.1 同步整流IC介紹 35
3.5 本文所提結合同步整流之LLC轉換器 36
第四章 萬用輸出智慧型充電器 37
4.1 萬用輸出智慧型充電器架構 37
4.2 輸入切換開關 40
4.3 單晶片PIC16F84簡介 41
4.4 本文所提之萬用輸出智慧型充電電路 42
第五章 實驗結果與討論 47
5.1 LLC諧振轉換器實驗結果與討論 47
5.2 含同步整流LLC諧振轉換器實驗結果與討論 58
5.3 本文所提含同步整流LLC諧振智慧型充電器實驗結果與討論 70
第六章 總結與未來發展方向 76
6.1 總結 76
6.2 未來發展 76
參考文獻 77

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