臺灣博碩士論文加值系統

近年來由於高科技產業的迅速發展，世界各國對於電力品質的需求也愈加重視，例有關IEC 6100-3-2或IEEE std. 519等諧波標準的規範，已普獲世界各國的認同。相對的這類用戶對於電力品質的要求也越來越嚴格，因此如何提高各式電力轉換器的性能，以符合用戶要求的電力品質變成電力電子領域內一熱門的研究課題，也因此不管是交流轉直流的整流器或是直流轉交流的反流器之性能改進研究也在電力電子領域吸引非常多的研究。故本論文所研究的主題即針對此目標，提出壹具有可變功因及具雙向功率潮流的單相多階反流器之新型磁滯電流控制策略。
由於二階磁滯電流控制器具有快速響應、實作電路簡單與限定電流誤差等優點，故已廣泛的使用，然而，現有文獻之多階磁滯電流控制策略，係利用交流電壓源與直流電壓作為直流電壓等級之區分標準，由模擬結果發現此控制策略尚有缺陷，會造成電流誤差於部份區間交接處超出所設定的誤差邊界情形。為此，作者遂提出一新型控制策略以改進現有文獻之理論缺陷處。此外，為了更容易實現新型控制策略，作者更提出一近似實現方法；其方法不但能夠獲得正確的直流電壓等級區分，可保證電流誤差量在設定的邊界內，同時亦可避免複雜的電流導數之計算，可說甚為實用。最後並實際製作完成一硬體電路雛型，且提供模擬與實驗結果以驗證所提理論之可行性。

Recently, due to the rapid progress in high technology industry, much better power quality is required to meet the need of highly accurate automation machinery. As a result, how to achieve a much better performance for the core power converters has become a popular research topic in power electronics domain. In view of this, a new hysteresis current controller with controllable power factor and bi-directional power flow capability for single-phase multi-level inverters is proposed in this thesis.
Owing to the fast response, easy implementation and with bounded errors, the well known two-level hysteresis current controller has been widely used in various applications. However, as far as existing multi-level hysteresis current controllers are concerned, only an intuitive idea is used to choose the multi levels for the controller. It turns out that the resulting current errors will be out of the assigned error bounds around some transition regions of adjacent voltage levels. Hence, the author proposes a novel multi-level hysteresis current controller with sound theoretical basis to improve the above drawbacks. In addition, for easy implementation, the author also proposes an approximate realization method by using three hysteresis bands. This realization can not only keep the current errors within the assigned error bounds for almost all the time but also can avoid the complex calculation of the current error derivatives. Finally, a prototype has been implemented and some simulation and experimental results are also provided for verifying the validity of the proposed control strategy.

中文摘要 I
英文摘要 II
目 錄 III
圖目錄 V
表目錄 IX
第一章 緒 論 1
1-1 研究動機 1
1-2 文獻回顧 4
1-3 本論文之貢獻 7
1-4 本論文之內容概述 7
第二章 單相多階反流器之基本工作原理 9
2-1 前言 9
2-2 全橋串聯型反流器電路架構及工作原理 9
2-3 最近壹篇相關文獻控制策略簡介 16
第三章 新型多階磁滯電流控制器 35
3-1 前言 35
3-2 新型控制策略 35
3-3 反流器元件參數設計 43
3-4 模擬結果 48
第四章 實體製作與實測結果 60
4-1 前言 60
4-2 新型控制策略之實現方法 60
4-3 模擬結果 68
4-4 硬體電路實作 74
4-5 實作結果 86
第五章 結論 97
參考文獻 99
附錄A Pspice模擬程式 105
附錄B 數位鎖相迴路IC 112

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