適応信号処理を用いたアクティブフィルタの補償特性改善

概要

論文の詳細を見る
This paper proposes a simple and practical method for improving performance of DSP-controlled current source active power filters (AF). The transfer function of a DSP-controlled AF has a phase-lag nature because there is a time lag in the control output due to the computation time required by DSP, and the converter used for AF has first order lag characteristic. As AF has to generate high frequency compensation currents, the phase-lag characteristic causes a serious deterioration in the filter performance. In the proposed system, an adaptive digital filter (ADF) is used as a series compensator of AF and it compensates for the phase-lag characteristic of AF. It was confirmed by experimental results that a simple two-tap ADF is very effective to improve AF compensation performance.
社団法人電気学会の論文
1996-11-20