How can I compute envelope for three phase current?
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I stuck in a very small step i.e. the envelope identification of three phase current signal. In matlab when I used the predefined envelope function, it computed the three individual envelope plots instead of one plot for three phase current signal.
Please guide me, how can I plot the single envelope for all the three phase wave?.
Star Strider on 24 Sep 2022
I am not certain what you want.
Perhaps this —
Fs = 0.0001;
t = linspace(0, 1, 1/Fs)/Fs;
s = sin(2*pi*t*60 + deg2rad([0; 120; 240]))
[seu,sel] = envelope(s, 1, 'peak')
plot(t, max(seu), '-r', 'LineWidth',2)
plot(t, min(sel), '-g', 'LineWidth',2)
plot(t, max(s), '-r', 'LineWidth',2)
plot(t, min(s), '-g', 'LineWidth',2)