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研究生:謝宏毅
研究生(外文):Hung-I Hsieh
論文名稱:零電壓切換全橋轉換器轉態與輸出電感的實現
論文名稱(外文):REALIZATION OF TRANSITION AND OUTPUT INDUCTORS FOR PHASE-SHIFTED ZERO-VOLTAGE-SWITCHING PWM FULL-BRIDGE CONVERTER
指導教授:鄧清政
指導教授(外文):Ching-Cheng Teng
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電機與控制工程系
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:2002
畢業學年度:90
語文別:中文
論文頁數:82
中文關鍵詞:零電壓切換全橋轉換器轉態電感輸出電感
外文關鍵詞:Zero-Voltage-Switching (ZVS)Full-Bridge ConverterTransition InductorOutput Inductor
相關次數:
  • 被引用被引用:2
  • 點閱點閱:357
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本論文研究相移式零電壓切換脈波寬調變全橋轉換器(PS-ZVS-PWM FB Converter)之動態特性分析的新詮釋,尤其針對圈數比 大於1的情況下。本文提出在半個開關週期內轉換器的五種動態模式,依次為能量傳輸狀態(Energy-delivery-state, ),領前側第一共振狀態(First-resonant-state, ),能量保持狀態(Energy-holding-state, ),落後側第二共振狀態(Second-resonant-state, ),以及能量轉向狀態(Energy-transition-state, )等。值得注意的是,轉換器之轉態電感 只在能量轉向狀態時為主要參數,其餘四種狀態則以反射至初級側之輸出電感 為主,因此兩個共振狀態均受制於共振電感 和功率開關之輸出電容的共振表現。此外,本論文並提出共振電感 對應於初級電流 的3-D動態能量分佈情形,以做為功率開關達到零電壓切換條件的參考能量準則。根據理論的推導結果,我們提出實現PS-ZVS-PWM FB轉換器之轉態電感 和輸出電感 的搭配設計及選用準則。最後,經由MATLAB軟體模擬以驗證理論推導之正確性後,實際製作一部1KW相移式零電壓切換脈波寬調變全橋轉換器,並針對各種不同的負載變化作實務的量測,以評估系統之動態表現及驗證理論與實務的一致性。

This thesis proposes a new description of the phase-shifted zero-voltage-switching pulse-width modulated full-bridge (PS-ZVS-PWM FB) converter, in particular for the turns-ratio greater than one. Five dynamic conversion models are introduced, including energy-delivery state, first resonant state, energy-holding state, second resonant state, and energy-transition state etc. Interestingly, the transition inductor is only dominant in energy-transition period and the other four dynamics are mainly subject to the output inductor when the turns-ratio of the main transformer is greater than one. Both two resonant states are dependent on the resonant inductance and the power MOSFETs’ output capacitances. Besides, a 3-D dynamic-energy distribution for describing the energy in the resonant inductor versus the primary current is explored, which is as reference to achieving ZVS at the power switches. According to the theoretical derivation, we suggest a design consideration for selecting the and in system realization. Finally, a simulation by MATLAB is implemented for verifying the theoretical description. A 1-KW PS-ZVS-PWM FB converter is realized with the derived parameters and examined with versatile loads to assess the system performance, which is quite the same as the predicted dynamics.

目 錄
中文摘要 i
英文摘要 iii
誌謝 v
目錄 vi
表列 ix
圖列 x
參數符號索引表 xiii
第一章 緒論 1
1.1 簡介 1
1.2 文章內容架構說明 3
第二章 相移式零電壓切換脈波寬調變全橋轉換器之工作原理與分析 4
2.1 相移式全橋轉換電路架構簡介 4
2.2 能量傳輸狀態(ENERGY-DELIVERY-STATE, ) 7
2.3 領前側第一共振狀態(FIRST-RESONANT-STATE, ) 9
2.4 能量保持狀態(ENERGY-HOLDING-STATE, ) 12
2.5 落後側第二共振狀態(SECOND-RESONANT-STATE, ) 14
2.6 能量轉向狀態(ENERGY-TRANSITION-STATE, ) 17
第三章 轉態電感與輸出電感的選擇方法 20
3.1 零電壓切換條件與臨界電流之決定 22
3.2 輸出電感 的決定方法 24
3.3 轉態電感 的決定方法 25
第四章 轉換器設計考量與實現 27
4.1 系統規格制定 27
4.1.1 設計考量與參數制定 27
4.1.2 轉換器設計實例 28
4.2 主變壓器設計考量與參數制定 29
4.2.1 鐵芯材質的選擇 31
4.2.2 鐵芯大小的選擇 31
4.2.3 決定初級側線圈 和次級側線圈 之橫截面積 33
4.2.4 變壓器兩側繞線圈數之決定 34
4.2.5 主變壓器設計實例 34
4.3 轉態電感 與輸出電感 的設計與選擇 35
4.3.1 設計考量與參數制定 35
4.3.2 轉態電感與輸出電感之設計實例 36
4.4 決定共振頻率 與開關切換頻率 38
4.4.1 共振頻率 之決定方法 38
4.4.2 開關切換頻率 之決定方法 39
4.4.3 共振頻率與開關切換頻率之實例設計 40
4.5 領前與落後側之臨界電流 與 判斷法則 41
4.6 功率開關晶體選用 41
4.6.1 選用考量與參數制定 41
4.6.2 功率開關設計實例 42
4.7 控制器設計考量 43
4.7.1 設計須知與選用考量 43
4.7.2 補償器設計考量 43
4.7.3 控制器設計實例 44
第五章 系統模擬與實務量測結果 45
5.1 轉換器之MATLAB模擬與實務量測結果 45
5.1.1 系統於不同負載時之能量傳輸狀況討論 45
5.1.2 功率晶體位於領前與落後側之零電壓切換達成討論 49
5.1.3 共振電感之能量分佈狀況討論 54
5.2 轉換器之電器特性量測結果分析 56
第六章 結論與未來展望 60
參考文獻 62
附錄 67
A.1 TDK FERRITE CORES FOR POWER SUPPLY AND EMI/RFI FILTER (TYPE: EE55/55/21 CORES) 68
A.2 ARNOLD MAGNETIC POWDER CORES (PART NUMBER: A-254168-2) 71
A.3 UNITRODE PHASE SHIFT RESONANT CONTROLLER UC3879 74
A.4 SHINDENGEN VX-2 SERIES POWER MOSFET 2SK2196 (F20W50VX2) 77

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