Starting to think about MPPT algorithms - P&O (perturb and observe) is simple to understand, but can oscillate around the MPP. InCond (incremental conductance) is more complex mathematically, but can yield better results.

By Julian

Youtuber, shed dweller, solar charge controller aficionado

7 thoughts on “Mppt solar charge controller #13 – conductance, digital filtering and algorithms”
  1. Avataaar/Circle Created with python_avatars NamacilHDx says:

    probaly a litte bit to late now but i though about some "smoothing" i call it ,,,, its basicly avg. but its different its bacily
    OUT += (In-Out)/Constant _for_speed well i always fuck up this mabey its (in-out) mabey its the other way around but … this is it and the thing with that smoothing is … its kind of dynamic its realy fast in big changes but if the IN differs the OUT only in a little bit the change will also be just lillte that kind of smoothes but still keeps up very nicly with the acctuall reading and of course because of that it has somekind3 of a cap charging curve to it …. as i said its too late but xD well shared knowalge and very bad englisch
    greetings germany 😀

  2. Avataaar/Circle Created with python_avatars Kuusikorven tila says:

    One trick to filter that kind of noice (measuring current). Take few measurments and then median from those. Its slover because have to take multiple ones, but it fiters very nicely noice.

  3. Avataaar/Circle Created with python_avatars Yves Baggi says:

    Yeah! DSP … my cup of tea… love filtering. great series Julian.

  4. Avataaar/Circle Created with python_avatars DragonsREpic says:

    30 is FREEZING

  5. Avataaar/Circle Created with python_avatars Julian Ilett says:

    Yes I did look at Tim Nolan's design, but it was some time ago. Perhaps it's time to have another look.

  6. Avataaar/Circle Created with python_avatars BitBastelei says:

    If you havn't already: You should take a look at the "Arduino PPT Solar Charger" by Tim Nolan – maybe there are some interesting parts you can use in your design

  7. Avataaar/Circle Created with python_avatars yousaf465 says:

    can you post Schematics and parts list for MPPT controller

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