matlab code to plecs

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1

Hi

I am working on the MPPT algorithm (P&O) and I did it in MATLAB function and it works. However, I cannot transfer it to C-script, and I dunno how it works in plecs.

could anyone help, the script is as follows:

function duty = MPPT_algorithm (vpv,ipv,delta)
duty_init=0.1; duty_min=0; duty_max=0.85;

persistent Vold Pold duty_old;

if isempty(Vold)
Vold=0; Pold=0; duty_old= duty_init;

end

P=vpv*ipv;
dV=vpv-Vold;
dP=P-Pold;

if dP~=0 && vpv>30
if dP< 0
if dV < 0
duty = duty_old - delta;
else
duty=duty_old + delta;
end
else
if dV<0
duty =duty_old + delta;
else
duty = duty_old - delta ;
end
end
else
duty = duty_old;

end

if duty>= duty_max
duty=duty_max;
elseif duty

2

Hello,

There are several examples of C-Script-based MPPT algorithms in the PLECS demo model library already. See the “Single-Phase PV Inverter with Partial Shading” model, for example.

Best regards,

Kris