本文旨在研製二相電力系統之主動式電力濾波器，透過Le- Blanc變壓器將三相電源轉換成二相電源。本文提出將主動式電力濾波器並聯於用來提供多組單相非線性負載的變壓器二相側，並利用主動式電力濾波器消除諧波電流、改善功率因數及平衡兩相負載電流。本文採用相位控制整流器作為非線性負載之架構。
本文利用MATALB/Simulink軟體建構整個模擬系統，包含了Le- Blanc變壓器、並聯型主動式電力濾波器電路、非線性負載電路。硬體方面則透過數位信號處理器(TMS320F2812)進行量測與測試，運算出二相電源之補償電流，利用磁滯電流控制法決定主動式電力濾波器之電力開關切換信號。本文並提出前饋補償方法，用以改善相控整流器觸發延遲角度改變時的暫態響應。
本文透過模擬與實驗結果證明所提出之主動式電力濾波器之可行性。

The subject of this thesis is to implement an active power filter (APF) for the two-phase power system which exercise Le-Blanc transformer to transfer a three-phase source to a two-phase source. The proposed APF is parallel to the two-phase side of the transformer, which provides power to several single-phase non-linear loads. The APF is used to eliminate the harmonic current, improve power factor and balance the two-phase current. Phase-controlled rectifiers are used as the non-linear load.
In this thesis, a simulation system is built by MATLAB/Simulink, which includes Le-Blanc transformer, APF and non-linear loads. Moreover, a hardware system which deploys a digital signal processor(TMS320F2812) is also implemented for test and measurement APF system. The DSP controller calculates the compensation current for the proposed the two-phase source, and determines the switching patterns with hysteresis method. A feedforward compensation is proposed to improve the transient response during the changing of the firing angle of the phase-controlled rectifiers.
Both simulation and experiment results show the validity of the proposed APF system.

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