臺灣博碩士論文加值系統

本論文提出一種結合切換式電源與線性功率放大器兩種電路優點的混合式供電系統，由切換式電源提供主輸出電壓與功率給負載，而線性功率放大器作為一個校正放大器，補償輸出電壓漣波與提供穩定輸出電壓。結合兩種控制方式除了降低輸出電壓漣波，最重要的是可以同時提高整體效率，已改善獲得低輸出電壓漣波，而純粹由線性功率放大器供電之低效率缺點。本論文同時研究交流電源與直流電源兩種實現方式，在交流電源方面，是利用線性功率放大器與全橋式換流器結合做出輸出頻率與電壓可調的交流電壓；在直流電源方面，則是利用線性功率放大器結合相移全橋轉換器做出輸出電壓可調之寬範圍、低漣波的直流電壓。最後並實作輸出電壓70 至110 及輸出頻率最大1 之混合式交流電源，與輸出電壓5 至50 之混合式直流電源，最大輸出功率為500W之兩種電路雛形，已驗證本文所提控制方法確實可行。

The thesis proposed a hybrid power system with combined advantageous features of switching power supply and linear power amplifier. The switching power supply would provide the primary output voltage and power to the load, while the linear power amplifier would act as a correcting amplifying device to compensate for power ripple as a way to stabilize voltage output. Combination of these two components not only reduced the output voltage ripple but improved the overall efficiency simultaneously, as the power output level could be higher, in comparison with the low efficiency of a system with only the linear power amplifier. The thesis would explore two practical approaches of using alternating and direct current power supply. For alternating power supply, it combined the linear power amplifier and the full-bridge inverter to produce alternating voltage which had adjustable output frequency and voltage. The direct current power supply would use a linear power amplifier and a phase shift full-bridge converter to produce wide-ranged and low-rippled direct current which had adjustable output voltage. And, two prototypes of electric circuit with the maximum output power of 500W to produce final output of hybrid alternating power at 70 to 110 with the maximum frequency of 1 and a hybrid direct power at 5 to 50 would be modeled to prove the control method as practicable.

摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vi
表目錄 ix
第一章 緒論 1
第二章 電源供應器種類 3
2.1簡介 3
2.2線性電源供應器 3
2.3切換式電源供應器 4
2.4混合式電源供應器 5
第三章 混合式電源系統之架構 6
3.1全橋式換流器 6
3.2相移式全橋轉換器 8
3.2.1直流/直流轉換器 8
3.2.2相移式全橋電路動作原理 9
3.3 線性功率放大器 15
3.3.1 A類功率放大器 15
3.3.2 B類功率放大器 16
3.3.3 AB類功率放大器 17
3.3.4 Apex®功率放大器介紹[14] 18
第四章 系統控制與架構設計 19
4.1混合式交流電源 19
4.1.1交流電源系統架構 19
4.1.2正弦脈波寬度調變控制方式 20
4.1.3 LC濾波器設計 21
4.1.4 控制原理 23
4.2混合式直流電源 24
4.2.1直流電源系統架構 24
4.2.2高頻隔離變壓器設計 26
4.2.3輸出電感設計 30
4.2.4輸出電容設計 31
4.2.5諧振電感設計 32
4.2.6 控制原理 34
4.3 交錯式並聯相移全橋轉換器 35
4.3.1電路架構 35
4.3.2輸出並聯系統之均流訊號 38
第五章 實驗量測 42
5.1簡介 42
5.2混合式交流電源之量測 43
5.3混合式直流電源之量測 49
5.4 交錯式並聯相移全橋轉換器之量測 54
5.5效率量測與電壓調整率 59
5.5.1效率 59
5.5.2電壓調整率 61
第六章 結論與未來研究方向 64
6.1結論 64
6.2未來研究方向 64
參考文獻 65

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