直流コンデンサ容量を低減可能な単相アクティブフィルタの制御法

抄録

This paper deals with analysis and reduction of dc voltage fluctuations in a single-phase active filter caused by a sudden load change. The analysis reveals that the delay time of the harmonic detection causes dc voltage fluctuations in transient states. A new control method capable of reducing the dc voltage fluctuations is proposed based on the analysis. The dc capacitor can be reduced to the required capacitance to satisfy the ripple current in steady states. Experimental results are shown to verify the viability of the analysis and the proposed control method.