Can the Width of the Harmonic Analysis Window be Increased Beyond 16?

In order to analyze the harmonics by the PLL synchronization, the maximum possible window width is automatically determined depending on the frequency of the fundamental wave of the input signal (fundamental frequency f).

When the fundamental frequency f of the input signal is 40 =/< f < 70 Hz, the width cannot be set higher than 16. The following are the settings possible, given different fundamental frequencies f:

  • 10 =/< f < 20 Hz: 1 to 4
  • 20 =/< f < 40 Hz: 1 to 8
  • 40 =/< f < 70 Hz: 1 to 16
  • 70 =/< f < 130 Hz: 1 to 32
  • 130 =/< f < 250 Hz: 1 to 64
  • 250 =/< f =/< 440 Hz: 1 to 128

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