隨著科技產業的日益進步,各式的交直流轉換設備同時也被大量的運用,而當中所產生的電流諧波,造成電力品質的低落並嚴重的汙染了電源系統;對於連接於電力系統中的其它精密設備而言,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。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。 而決定並聯式主動電力濾波器之補償效能的指標是參考補償電流應如何取決,一般簡易常用的方式是藉由人工調整以得到所需之參考補償電流,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,本文提出一簡易同時具智慧的判斷並取決參考補償電流大小的方法,並將此法實際運用於系統之中以證實此方法的可行性。
Due to the power electronic equipments have been widely used; the power quality is worse by the current harmonics increasing. Several researches for solving this problem have been presented in recent years. The most popular among these researches is adopting parallel active power filter. The key point of deciding the efficiency of parallel active power filter is how to determine the reference compensating current in this system. This thesis presents a method which can intelligently decide the reference compensating current and performs this method to a real parallel active power filter to verify the feasibility