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Positive Sequence Detector

  1. Mar 10, 2017 #1
    Hi,

    I am studying a positive sequence detector and have some trouble understanding it. I understand most of it, but the author in the book "Instantaneous Power Theory and Applications to Power Conditioning" writes:
    For extracting the fundamental positive-sequence voltage with the dual method shown in Fig. 4-27, the amplitude of the auxiliary currents i'alpha and i'beta are not important, and can be chosen arbitrarily.

    I dont understand why the amplitude of the currents from the PLL circuit does not matter. I have simulated this in Simulink and verified that the circuit works. Does the amplitude cancel each other out behind all the math in some of the blocks?

    Best regards

    psd.JPG
    Source: Instantaneous Power Theory and Applications to Power Conditioning
     
  2. jcsd
  3. Mar 13, 2017 #2
    Bump.
     
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