電源側高調波電流低減のための一定スイッチング周波数Boost-Type Ac-Dcコンバータ

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タイトル別名
  • Boost-Type AC-DC Converter with Constant Switching Frequency for Reduction of Harmonic Components in Input Current
  • デンゲンガワ コウチョウハ デンリュウ テイゲン ノ タメ ノ イッテイ スイッチング シュウハスウ Boost Type AC DC コンバータ

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説明

A single-phase voltage-source type rectifier circuit generates many harmonic components in the input current. These generated harmonics mayc ause various disturbances in the utility's distribution. As the reduction method of these harmonics, a boost-type AC-DC converter with the hysteresis current control (HCC) is most frequently investigated. However, this control method has a major drawback that the switching frequency varies over a wide range. This brings forth a complicated ftlter design. In this paper, we propose the method for applying the PWM control with the constant switctting frequency to two types of boost-type AC-DC converter.This control method offers advantages like the fixed frequency of the generated harmonics and the simplified control signal generation. We obtain quantitatively the reduction effect of harmonic currents by the calculations, including the comparison between these two types of converter. From the results, it is clarified that this method is veiy effective and useful.

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