研究生: |
楊政諺 Cheng-yan Yang |
---|---|
論文名稱: |
雙模推挽式升壓型功率因數修正器之研製 Study and Implementation of a Dual-Mode Push-Pull Boost Power Factor Corrector |
指導教授: |
羅有綱
Yu-Kang Lo 邱煌仁 Huang-Jen Chiu |
口試委員: |
王建民
Jian-Min Wang 楊宗銘 Chung-Ming Young |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 61 |
中文關鍵詞: | 功率因數修正器 、推挽式轉換器 、耦合電感 、準諧振模式 、波谷切換 、不連續導通模式 、雙模式控制 |
外文關鍵詞: | power factor correction, push-pull converter, coupled inductor, quasi-resonant, valley-switching, discontinuous current conduction mode, dual-made |
相關次數: | 點閱:601 下載:13 |
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本論文所提之推挽式功率因數修正器可以工作於準諧振模式或導通模式。於準諧振模式操作時,由於開關具有準諧振波谷切換,且輸出二極體具有零電流截止,因此能減少切換損失並提升轉換效率。於不連續導通模式操作時,具有定頻工作、輸出二極體零電流截止、自然功率因數修正、控制電路簡單與EMI設計容易之特點。本論文詳細分析與敘述此兩種模式之電路理論與設計方法,且透過模擬與實作結果,驗證所提功率因數修正器之可行性。實作一通用交流電壓輸入、輸出380 V/300 W之雙模推挽式升壓型功率因數修正器,在交流輸入電壓100 Vac與220 Vac之最低效率分別為94.4%與96.7%。
The operations of the proposed dual-mode push-pull boost power factor corrector can be under either quasi-resonant (QR) mode or discontinuous conduction mode (DCM). For QR mode operation, the valley-switching on the switch and zero-current-switching (ZCS) of the output diode can reduce the switching losses and improve the conversion efficiency. On the other hand, the DCM operation features fixed switching frequency, ZCS of the output diode, natural PFC function, simplified control methodology and EMI filter design. Circuit principles and design procedures are presented and verified by the simulations and experimental results. A prototype is then implemented with universal line voltage, a 380 V output DC voltage 380 V and 300 W power rating. The minimum efficiencies at line voltages of 100Vac and 220Vac are 94.4% and 96.7%, respectively.
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