単相交流信号の基本波成分推定ためのD因子フィルタを用いた周波数追従形推定法

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  • 新中 新二
    神奈川大学工学部電子情報フロンティア学科

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タイトル別名
  • A New “D-Estimation Method” for Estimating Phase, Frequency, and Amplitude of Frequency-Varying Single-Phase Signals
  • タンソウ コウリュウ シンゴウ ノ キホンハ セイブン スイテイ タメノ D インシ フィルタ オ モチイタ シュウハスウ ツイジュウケイ スイテイホウ
  • A New “D-Estimation Method” for Estimating Phase, Frequency, and Amplitude of Frequency-Varying Single-Phase Signals

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The phase, frequency, and amplitude of single-phase voltages are the most important and basic information required for single-phase grid connected applications. This paper proposes a new “D-estimation method” for instantly and adaptively estimating the phase, frequency, and amplitude of frequency-varying single-phase signals in such applications. The D-estimation method has the following attractive features: 1) it is a new filtering method using the D-filters; 2) it involves the use of only filters and can be easily designed; 3) even in hostile envelopments caused by a frequency variation, a phase jump, amplitude sag/swell, harmonic distortion, and/or contaminated noise, good instant estimates of the phase, frequency, and amplitude can be obtained; 4) it is simple, but can exhibit high performance similar to the “robust PLL method”. This paper presents the D-estimation method together with the design rules in detail; the usefulness of the method is verified by performing extensive numerical experiments.

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