Conference paper Open Access

A Robust Measurement Method for Supraharmonics Under Power Frequency Deviations

Stefano Lodetti; Victor Khokhlov; Jan Meyer; Jorge Bruna; Julio J. Melero


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{
  "DOI": "10.1109/AMPS.2019.8897762", 
  "author": [
    {
      "family": "Stefano Lodetti"
    }, 
    {
      "family": "Victor Khokhlov"
    }, 
    {
      "family": "Jan Meyer"
    }, 
    {
      "family": "Jorge Bruna"
    }, 
    {
      "family": "Julio J. Melero"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2020, 
        5, 
        29
      ]
    ]
  }, 
  "abstract": "<p>Abstract&mdash;This paper introduces a new measurement method for supraharmonic distortion with improved robustness against power frequency deviations. The proposed method is based on wavelet analysis and it is designed to analyze a 10 cycles measurement interval. Fourier-based methods, instead, must analyze a fixed 200 ms window in order to avoid apparent shifts of the supraharmonic frequency components. The results of the experimental measurements presented in the paper show that the Fourier-based method suggested in IEC 61000-4-7 standard produces results affected by the value of the power frequency. The proposed method, instead, provides results completely inde- pendent of the power frequency. This feature also removes the need of a previous high pass filtering stage, required for the IEC method. Moreover, the proposed method has the additional advantage of working on the same measurement interval as traditional harmonics (below 2 kHz), feature that can reduce the complexity of measurement instruments.</p>", 
  "title": "A Robust Measurement Method for Supraharmonics Under Power Frequency Deviations", 
  "type": "paper-conference", 
  "id": "3865161"
}
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