単相アクティブフィルタの容量低減を目的とした周波数制限手法

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  • Frequency Limitation Method for Reducing the Power Rating of a Single-Phase Active Filter
  • タンソウ アクティブフィルタ ノ ヨウリョウ テイゲン オ モクテキ ト シタ シュウハスウ セイゲン シュホウ

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Recently, many energy-saving household appliances such as air conditioners, refrigerators, and LED bulbs are being used in residences. Most household appliances use diode rectifiers equipped with smoothing dc capacitors, which output a large amount of harmonic current into utility lines. This harmonic current may cause electrical equipment to malfunction or fail. This paper discusses the harmonic compensation characteristics and power rating of a single-phase active filter, and proposes the use of control methods for reducing the power rating of the active filter. Furthermore, three single-phase active filters in conjunction with the proposed control method are used in an experiment on a three-phase system. The experimental results confirm that the frequency limitation method is suitable for a single-phase active filter.

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