臺灣博碩士論文加值系統

本篇論文主要研製一寬輸出電壓範圍之高壓直流電源供應器，其控制策略綜合了全橋式串聯諧振轉換器(Full-Bridge Series Resonant Converte, FBSRC) 與全橋相移式轉換器(Phase- Shifted Full-Bridge Converter)的特點。本論文所提之控制策略具有以下特性：高壓輸出時電路工作於串聯諧振模式，電路具有零電壓切換之特性；而低壓輸出時除了藉由調變責任週期達到穩壓之外，也調整開關訊號相位作相移動作，並利用其死域時間(Dead Time)期間產生諧振使電路仍然保持零電壓切換(Zero-Voltage Switching, ZVS)特性，因此低壓或高壓輸出皆可實現高轉換效率之目的。
本論文架構選用全橋相移式串聯諧振轉換器，其在開關導通時具有零電壓切換的特性，由於輸出應用在高壓場合，故二次側使用全橋整流電路以降低電壓應力，用以提供額定功率450W、400V~ 3kV的高壓輸出。控制方面則是採用德州儀器所開發的數位訊號處理器晶片TMS320F28035來實現數位控制，最後由實驗結果驗證硬體規格雛型電路之可行性。

This thesis mainly develops a high-voltage DC power supply with a wide-range of adjustable output voltage. It focuses on the design and control of a full-bridge phase-shifted series resonant converter. The proposed full-bridge phase-shift series resonant converter features a novel two-mode operation. When low voltage output, it operates in phase-shifted PWM mode. When high voltage output, it operates in series resonant mode. In both modes, the zero voltage switching can be achieved during dead times. Therefore, the proposed converter can realize the target of high conversion efficiency for all voltage conditions.
The power-stage is a full-bridge phase-shifted series resonant converter, which has the characteristics of zero voltage switching. Since the output apply in high-pressure situations, so the secondary side choose a full bridge rectifier circuit to reduce the voltage stress. In order to implement the digital controller, the DSP chip TMS320F28035 developed by Texas Instruments is adopted. Finally, a 450W adjustable power supply with 400V input voltage and an output voltage ranging from 400V to 3000V is designed and implemented. Experimental results of the prototype converter are shown and discussed to verify the feasibility of the studied scheme.

摘　要
Abstract
誌　謝
目　錄
圖索引
表索引
第一章 緒論
1.1研究動機與目的
1.2研究內容
1.3論文內容架構簡述
第二章 全橋串聯諧振轉換器架構與原理
2.1主架構動作狀態分析
2.1.1第一能量傳送區間：(t0 ≤ t < t1)
2.1.2第一諧振區間：(t1 ≤ t < t2)
2.1.3換向區間：(t2 ≤ t < t3)
2.1.4第二能量傳送區間：(t3 ≤ t < t4)
2.1.5第二諧振區間：(t4 ≤ t < t5)
2.1.6第二換向區間：(t5 ≤ t < t6)
2.2串聯諧振轉換器之功率級電路分析
2.2.1 Q值大小對於轉移函數的影響
2.2.2 K值大小對於轉移函數的影響
第三章 全橋相移式零電壓切換轉換器架構與原理
3.1全橋相移式零電壓切換轉換器主架構介紹
3.2全橋相移式零電壓切換轉換器之二次側整流電路
3.3主電路轉換狀態區間動作原理分析
3.3.1能量傳送區間：(t0~t1)
3.3.2第一諧振區間：(t1~t2)
3.3.3線性放電區間：(t2~t3)
3.3.4第二諧振區間：(t3~t4)
3.3.5換流區間：(t4~t5)
3.4臨界切換電流的計算
3.4.1滿載與臨界負載的一次側電流
3.4.2諧振電感上的殘餘電流與ZVS的關係
3.5有效責任週期分析
第四章 數位控制系統介紹與設計
4.1整體電路動作原理
4.2軟體流程規劃
4.3驅動與取樣電路設計
4.3.1驅動隔離IC介紹
4.3.2電壓取樣電路設計
第五章 電路參數設計與考量
5.1全橋相移式串聯諧振轉換器電路設計實例
5.2.1設計電路參數制定
5.2.2切換功率晶體
5.2.3諧振元件設計
5.2.4變壓器設計
5.2.5輸出整流濾波電路設計
5.2.6全橋相移電路參數確認
第六章 實驗量測數據與結果
6.1電路規格
6.2實驗波形
6.3量測數據與效率
第七章 結論與未來展望
7.1結論
7.2未來研究方向
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