臺灣博碩士論文加值系統

本篇論文在比較模塊設計於昇壓型功因修正器操作在連續傳導和不連續傳導的優缺點。由於一般電腦或電器之電源供應器大多沒有功因修正，但現今各工業先進國家皆制訂功因及諧波管制之標準與限制，故現今其產品勢必要做功因之修正，所以本文比較主動式昇壓型功因修正器操作在連續傳導和不連續傳導的優缺點。其連續傳導架構採用平均電流控制法操作在固定頻率下，有切換在固定頻率和輸入電流失真較小等優點，須加電流誤差放大器與較複雜的控制迴路等缺點。其不連續傳導架構採用變頻邊界控制法操作在固定導通時間變動頻率下，有較簡單的控制迴路和較小的切換損失等優點，切換在變動頻率和輸入電流漣波較大等缺點。將兩者在成本、效率、功率密度等之差異比較。本文使用PSIM模擬軟體對所提出的控制方法進行電腦模擬分析，並利用LT1249控制IC來實現昇壓型連續傳導平均電流法，和利用MC33262控制IC來實現昇壓型不連續傳導變頻邊界控制法，並完成其硬體製作與實驗比較。最後由本文設定測試項目與基準來比較獲得之實驗結果，其不連續傳導變頻邊界控制電路在效率、成本、複雜度均優於連續傳導平均電流控制電路。

This thesis presents the advantage and disadvantage of comparison between using CCM and DCM boost power factor correction converter model design. Because the power supply of the general computer or electric appliance most not have power factor correction, but now every industry-advanced country established the standard and limit of the power factor and harmonics. So now the product must correct the power factor. Therefore, this thesis compared the advantage and disadvantage of activing boost-type power factor correction converter between using CCM and DCM. The CCM-type used average current control method and operated in the fixed frequency. The CCM-type had some advantages of the fixed frequency and smaller input current distortion; some disadvantages of need to add current error amplifier and more complex control loop. The DCM-type used borderline control method and operated in the fixed on time and variable frequency. The DCM-type had some advantages of more easy control loop and smaller switching lose; some disadvantages of switching on variable frequency and. larger input current ripple. To compare the diversity of the both between the cost、efficiency and power density.
The thesis used PSIM computer simulated software to simulate and analyze the control method which been presented. To use LT1249 control IC achieved boost-type CCM average current control method, and using MC33262 control IC achieved boost-type DCM borderline control method. So, the hardware fabrication was finished to compare experimental result. Finally, the result followed test items and standard that the thesis set up. The DCM borderline control circuit on the cost、efficiency and complication was better to CCM average current control circuit.

目 錄
中文摘要 ----------------------------------------------i
英文摘要 ---------------------------------------------ii
誌謝 -------------------------------------------------iii
目錄 -------------------------------------------------iv
表列 -----------------------------------------------viii
圖列 -------------------------------------------------ix
第一章 緒論 -----------------------------------------1
1.1 研究動機與目的----------------------------------1
1.2 研究背景與發展概況------------------------------2
1.3 研究方法與系統描述----------------------------------5
1.4 論文內容概述----------------------------------------6
第二章 功率因數修正技術之分析-------------------------7
2.1 功率因數之定義----------------------------------7
2.2 被動功因修正器類型-----------------------------12
2.2.1 LC濾波功因修正器--------------------------12
2.2.2 π型濾波功因修正器-------------------------13
2.2.3 部分濾波功因修正器------------------------14
2.3 主動功因修正器類型-----------------------------15
2.3.1 降壓型功因修正器--------------------------16
2.3.2 昇壓型功因修正器--------------------------16
2.3.3 降昇壓型功因修正器------------------------17
2.3.4 隔離型功因修正器--------------------------18
2.3.4.1 返馳式轉換器------------------------18
2.3.4.2 順向式轉換器------------------------19
2.4 昇壓型功因修正器控制方法-----------------------19
2.4.1 連續傳導模式------------------------------19
2.4.1.1 磁滯電流控制法----------------------20
2.4.1.2 峰值電流控制法----------------------20
2.4.1.3 平均電流控制法----------------------21
2.4.2 不連續傳導模式----------------------------22
2.4.2.1 定頻自動控制法----------------------23
2.4.2.2 變頻邊界控制法----------------------23
2.4.3 兩種模式之比較----------------------------24
第三章 電路分析--------------------------------------25
3.1 昇壓型功因修正器之分析-------------------------25
3.1.1 操作在連續傳導時之分析--------------------25
3.1.2 操作在連續傳導與不連續傳導的邊界時之分析--27
3.1.3 操作在不連續傳導時之分析------------------28
3.1.4 昇壓型轉換器前期失真之分析----------------30
3.2 昇壓型功因修正器連續傳導平均電流控制法之分析-------31
3.2.2 平均電流控制IC LT1249之簡介---------------31
3.2.2 平均電流控制IC LT1249之分析---------------32
3.3 昇壓型功因修正器不連續傳導變頻邊界控制法之分析-37
3.3.2 變頻邊界控制IC MC33262之簡介--------------37
3.3.2 變頻邊界控制IC MC33262之分析--------------39
第四章 電路設計--------------------------------------44
4.1 系統規格---------------------------------------44
4.2 昇壓型功因修正器連續傳導平均電流控制法之設計---45
4.2.1 電路元件設計之選擇------------------------45
4.2.2 平均電流控制器之設計----------------------47
4.3 昇壓型功因修正器不連續傳導變頻邊界控制法之設計-52
4.3.1 電路元件設計之選擇------------------------52
4.3.2 變頻邊界控制器之設計----------------------54
第五章 系統模擬與實驗結果討論------------------------56
5.1 PSIM模擬系統與結果-----------------------------56
5.1.1 昇壓型CCM平均電流控制---------------------56
5.1.2 昇壓型DCM變頻邊界控制---------------------57
5.2 硬體實驗結果-----------------------------------59
5.2.1 昇壓型使用LT1249在CCM平均電流控制---------60
5.2.1.1 輸入為110VAC -----------------------60
5.2.1.2 輸入為220VAC -----------------------64
5.2.2 昇壓型使用MC33262在DCM變頻邊界控制--------68
5.2.2.1 輸入為110VAC -----------------------68
5.2.2.2 輸入為220VAC -----------------------72
5.3 比較與討論-------------------------------------76
第六章 結論------------------------------------------77
參考文獻-----------------------------------------------78

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