MPPT history anomaly

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andysprinter asked Feb 24, '24

MPPT history anomaly

MPPT 100/30. When I look at the history for a particular day it shows a peak power of 241w but on the trend graph it only shows 174w. Which one is correct?

MPPT SmartSolar

3

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Alexandra ♦ commented · Feb 25 at 02:39 PM

@Andysprinter

Screen shots might help

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andysprinter Alexandra ♦ commented · Feb 25 at 05:46 PM

Thanks Alexandra. The output is from a 300w panel300w panel

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img-2797.jpeg (677.0 KiB)

img-2796.png (545.0 KiB)

Alexandra ♦ andysprinter commented · Feb 25 at 06:26 PM

I am inclined to go with Nickdb answer (as you were) about data points.

I have a 100/30 with 360W panel. Was looking through the trends data and the history.

Sometimes I have a 10W difference sometimes 100w difference in the trends vs the peak recorded.

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1000026356.jpg (228.8 KiB)

1000026354.jpg (218.9 KiB)

Modifications Space

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Answer 1 · 2024-02-25T14:42:55Z

nickdb answered · Feb 25 at 02:42 PM

Charting often averages, or smooths, a sample over the sample period, with an actual peak being higher and recorded separately.

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