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Homework Help: Three Phase PV Grid-Tied System(MPPT)

  1. Sep 1, 2013 #1
    1. The problem statement, all variables and given/known data
    Currently, I'm doing on a research of this three phase PV grid tied system. I found a model and try to run and simulate for further understanding. There's an attachment of a model three phase pv grid tied system in Simulink. However, I've a hard time understanding the MPPT and also the subsystem part in the model. Can anyone guide me on this? Many thanks.

    2. Relevant equations

    3. The attempt at a solution
    I tried to place sink block to get the readings on every line. However, I have no idea how to get the value after the signal going through the memory block. I would like to know how it works. Meanwhile, for the subsystem, I guess it's a combination of solar equations.
    Last edited: Sep 2, 2013
  2. jcsd
  3. Sep 5, 2013 #2


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    Staff: Mentor

    Welcome to the PF.

    The simulation file doesn't appear to be attached to this copy of your thread. Can you attach it? Can you also attach a PDF version of the document?
  4. Sep 7, 2013 #3
    There's an attachment of the Three Phase Grid-Tied System in Matlab/Simulink.

    Actually,I'm having difficulties in understanding how the MPPT and subsytem work.My questions are:

    In MPPT block,
    i) Is Pn-Pb equivalent to P(n)-P(n-1) ?
    ii) Instead of delta P/delta V why is that delta P * delta V ?
    iii)Izit necessary to set the duty ratio to 0.001(Delta D)?

    In Subsystem block,
    i)I try to model out the equation. But I couldn't really figure it out which equation he used.

    Sincerely hope you could guide me on this. Sorry for any inconveniences caused. Many thanks.

    Attached Files:

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