A Time-Frequency Analysis for the Three-Phase PWM Converter using Wavelet Transform

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  • ウェーブレット変換による三相PWM 変換器の時間周波数解析
  • ウェーブレット ヘンカン ニ ヨル サンソウ PWM ヘンカンキ ノ ジカン シュウハスウ カイセキ

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Abstract

A three-phase voltage-fed converter operated by a two-phase PWM scheme offers relatively high ac voltage, low switching times, and low switching losses in comparison to that operated by a three-phase PWM scheme. However, the harmonics involved in the ac-side voltages and currents produced in the two-phase PWM scheme are distributed over a wide frequency range, which can be a significant drawback depending on its applications. Therefore the authors examine the problem using wavelet transform.

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