臺灣博碩士論文加值系統

本文旨在分析及製作具有用浮點數運算數位信號處理器之交流-直流-交流功率轉換器。本中採用高效能浮點數運算核心晶片，其運算相較於傳統定點式，具效能提升及軟體開發簡化的優點。本文系統之電壓及電流閉迴路控制策略採軟體程式完成，不僅可以簡化程式及縮短程式執行時間，亦可減少硬體電路成本。本文在發電側之交流-直流功率轉換器方面可改善電流諧波含量及提高功率因數，並採直流鏈電壓閉迴路控制，以維持直流鏈電壓固定而不受電源及負載變動的影響；本文之系統於市電側之直流-交流功率轉換器則具有同步旋轉座標交-直軸電流閉迴路控制，減少電流諧波含量，以提高整體系統響應速度。

本文建立交流-直流-交流功率轉換器之整體系統，以Matlab/Simulink應用軟體模擬，實體製作採浮點運算之數位訊號處理器(TMS320F28335)作為整體系統之控制核心。本文已完成800W之整體系統測試，發電側輸入電壓為110V，50Hz，直流鏈電壓為250V，電流諧波失真率為9.08%；市電側的交流電壓110V，60Hz，電流諧波失真率為16.64 %；系統整體效率為80%。

This thesis is concerned with the analysis and implementation of AC-DC-AC power converter with floating-point Digital Signal Processor. It provides better performance than traditional fix-point computation with simplified softwave development. The system voltage and current closed-loop control as well as overall system control strategies are conducted by softwave to reduce circuit component and improve system reliability. The input current harmonics and power factor of the AC-DC power converter are also improved. DC-link fixed-voltage control is adopted to maintain the dc-link voltage stable under load variation. In addition, under grid-connected operation, q-d current control in synchronous frame is used for DC-AC power converter to reduce current harmonic and improve the system response speed.
In this thesis, the AC-DC-AC power converter is built and simulated by Matlab/Simulink. The high-performance digital signal processor TMS320F28335 is use to control the power converter. A prototype of 800W power conversion system is developed. The Input voltage of AC-DC power converter is 110V, 50Hz. The dc-link voltage is 250V, the current harmonic distortion is 9.26%. Under grid-connected operation, the output voltage is 110V, 60Hz, the current harmonic distortion is 17.21%. The system efficiency is 80%.

中文摘要 I
英文摘要 II
誌　　謝 III
目　　錄 IV
符號索引 VI
圖表索引 IX
第一章　緒論 1
1.1　研究動機及目的 1
1.2　文獻探討 1
1.3　系統架構及本文特色 5
1.4　本文大綱 6
第二章　數位訊號處理器介面電路設計及製作 8
2.1　前言 8
2.2　數位訊號處理器內部架構 8
2.3　數位訊號處理器之浮點式運算 11
2.4　數位訊號處理器介面電路設計之類比數位轉換器 13
2.5　高解析度數位/類比轉換介面電路 15
2.6　數位訊號處理器之介面規劃 20
2.7　結語 22
第三章　功率轉換器之硬體電路規劃及實體製作 23
3.1　前言 23
3.2　功率開關電晶體及閘極驅動電路 23
3.2.1　功率級電晶體 23
3.2.2　功率級電晶體之閘極驅動電路 24
3.3　電壓及電流回授電路之設計 25
3.3.1　直流電壓回授電路 26
3.3.2　交流電壓回授電路 27
3.3.3　電流回授電路 28
3.4　結語 29
第四章　功率轉換器控制及軟體規劃 31
4.1　前言 31
4.2　發電側之三相交流/直流功率轉換器 31
4.2.1　發電側三相交流-直流功率轉換器之分析 31
4.2.2　發電側之角位置估測 33
4.2.3　發電側同步旋轉座標軸轉換 34
4.2.4　發電側之交-直軸電流閉迴路控制模式 36
4.2.5　比例積分調節器分析及設計 38
4.3　三相直流-交流功率轉換器之控制策略 40
4.4　軟體規劃 46
4.4.1　系統主程式之規劃 46
4.4.2　發電側之直流鏈電壓及交-直軸電流閉迴路控制程式規劃
48
4.4.3　市電側之電流控制程式規劃 50
4.4.4　獨立運轉之電壓控制程式規劃 52
4.5　結語 53
第五章　實體製作與實測結果 54
5.1　前言 54
5.2　實測條件 54
5.3　系統模擬及實測結果 55
5.4　結語 57
第六章　結論與建議 70
6.1　結論 70
6.2　建議 71
參考文獻 72
附　　錄 75
作者簡介 86

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