MATLAB: Help in fzero function

fzero pv cellMATLAB

I want to use the function fzero for modeling PV Cell, but i have a problem about the line (I=fzero(fun,I0))

they display me : Error in fzero

Best Answer

You should not have named your function fzero.m -- doing that interferes with calling the MATLAB fzero function.

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The problem is:

err2 = ((Vmp+(Rs*Imp))/(Ig-Imp-Isat((exp(1)*(q*(Vmp+(Rs*Imp))/n*k*T)-1))))- Rsh;
                                   ↑ ← HERE

Note that ‘Isat’ is a scalar, and in any event cannot be referenced with anything other than integers greater than 0 or logical vectors. I suspect this:

err2 = ((Vmp+(Rs*Imp))/(Ig-Imp-Isat.*((exp(1)*(q*(Vmp+(Rs*Imp))/n*k*T)-1))))- Rsh;
                                   ↑ ← MULTIPLICATION(?)

is intended, although it could be any valid operator.

MATLAB does not recognise implicit multiplication.

MATLAB: While executing a m-file it shows busy

It is getting in stuck while performing while loop inside for loop ( while(abs(g(j))>0.001)). Check your code for mistakes, because there are situations when (abs(g(j))>0.001) cannot be false.

Best Answer

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MATLAB: Array indices must be positive integers or logical values.

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