A new operating principle of voltage-doubler diode rectifiers to meet the harmonic guide lines

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  • 高調波ガイドライン適合型単相ダイオード整流回路
  • コウチョウハ ガイドライン テキゴウガタ タンソウ ダイオード セイリュウ カイロ

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Abstract

To improve the current waveform of diode rectifiers, we propose a new operating principle for the voltage-doubler diode rectifiers. In the conventional voltage-doubler rectifier circuit, relatively large capacitors are used to boost the output voltage, while the proposed circuit uses smaller ones and a small reactor not to boost the output voltage but improve the input current waveform. A circuit design method is shown and confirmed experimentaly. The experimental results of a 1.6kW rectifier show that the proposed diode rectifier satisfies the harmonic guide lines. A high input power factor of 97% and an efficiency of 98% are also obtained. The new rectifier needs no controlled switches to meet the harmonic guide lines, resulting in a simple, reliable and low-cost ac-to-dc converters in comparison with the boost-type current-improving circuits.

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