電流形アクティブフィルタシステムの制御法と補償特性
スポンサーリンク
概要
- 論文の詳細を見る
Nonlinear loads using power semiconductor devices produce harmonic currents and reactive power in AC power lines. As they are popular in many fields, the elimination of harmonic currents and reactive power is one of the important research projects.This paper describes a control method and compensation characteristics of the combined filter system of a current source active filter and a high-pass-filter. The system senses three signals, load currents, source currents and line voltages, to create the reference signals of the active filter. The goal of this paper is to solve the problems:(1) A harmonic-enlarging effect due to the parallel resonance, (2) Filtering of the harmonic currents produced by source-side harmonic voltages, and(3) Drawbacks of analog control such as being sensitive to noises, etc.The transfer function of the current source converter is identified, and is used for designing the control system of the active filter. Digital control based on a DSP is adopted to remove the drawbacks stemming from analog counterpart, but it is found that it introduces a new problem, a computational delay in the output, that results in serious deterioration of the fiter performance. It is shown that the addition of the source current feedback can solve not only the delay problem but ones due to the parallel resonance and source-side harmonic voltages.Finally a small setup controlled by a DSP was built, and the validity of the proposed method was demonstrated by experimental results.
- 社団法人 電気学会の論文
著者
関連論文
- キャリヤ波を用いたマルチレベルPWM法の高調波特性評価
- 直列三多重ハイブリッド変換器
- 三相直列多重ハイブリッド変換器
- 正弦波電流入力三相PWMコンバータの最適制御
- ひずみ特性因子の提案とPWM方式評価への応用
- 瞬時空間ベクトルと評価関数を用いた離散値系の予測電流制御法
- 正弦波内部モデルを用いたアクティブフィルタの電流制御
- 多重空間ベクトル変調法による直列多重NPC電力変換器の制御法
- 中性点クランプ形PWMコンバータのモデリングと最適レギュレータを用いた中性点電位制御
- 三相並列多重PWMコンバータの電流制御法
- 無整流子電動機の効率最適化速度制御
- 電流形アクティブフィルタシステムの制御法と補償特性
- 電圧形PWMコンバータの回路パラメータ設計法
- キャリヤ周波数変調によるPWMパルスパターン最適化法