- 學位論文
數位判斷參考補償電流之主動電力濾波器設計
The Design and Implementation of Active Power Filter by Digitally Judging Reference Compensation Current
摘要
隨著科技產業的日益進步以及電力電子技術的發展，各式以二極體組成的整流電路被廣泛的使用在日常生活當中，而當中所產生的電流諧波，造成電力品質的低落以及效率的降低並嚴重的汙染了電源系統；對於連接於電力系統中的精密設備而言，不但造成了大量的虛功損失，甚至也嚴重的干擾到通訊系統及電腦儀器系統的正常操作。隨著電子設備應用的大幅成長，為了解決這個問題，許多研究紛紛的被提出，其中最普遍採用的系統就是並聯式主動電力濾波器。 然而參考補償電流的擷取是否正確決定了並聯式主動電力濾波器之補償效能，一般簡易常用的方式是藉由人工調整以得到所需之補償電流，亦或藉由複雜度極高之演算法求得；人工的方式並非實用的方法，而使用演算法的方式則會增加對控制晶片之要求並進而增加成本。 針對這些問題，本論文利用數位訊號處理器發展出一套統整性的判斷法則，此判斷法則利用建構的標準參數表再加上斜率比例法可直接且快速的得到所需的補償電流命令，並將此法實際運用於系統之中以證實此方法的可行性。
並列摘要
Due to widely use of the power electronic equipments and the progress of power electronics technologies, applications of power converter have increased tremendously in recent years. The power quality is getting worse by the harmonics increasing in current. Several researches for solving this problem have been presented in recent years. The most popular one among these researches is adopting shunt active power filter. The key point of deciding the effectiveness of shunt active power filter is depending on how to determine the reference compensating current. To solve this problem, this thesis utilizes the digit signal processor to develop a set of judgment rules. These judgment rules are based on tables of standard parameters and law of proportion of slope. According to these rules, a compensation current can be decided directly and quickly. And at last, an application to a system in order to verify the feasibility of this method is made.