Operator '*' is not supported for operands of type 'struct'.

I want execute my Phasorcode by calling values of my PV and DG set SImulation. Hence I have logged data and saved it as .mat file. In following code you can observe code load that file (let me also know if this is the correct way of using values through .mat file)

% %This program is for samples from ATP simulation


clear all;
f0=50;       % System freq=50,
T0=.02;      % Time period=0.02 sec=20 msec

ts=2E-5; % ATP time step= 2E-5, so 1000 samples per cycle
N=round(T0/ts);    % samples per cycle.
    

%% Take current and voltage samples by .mat files from both ends of the line

If=load('out.mat');
Vf=load('out.mat');  
Ir=load('out.mat');
Vr=load('out.mat');

Nt = length(If);

 Ical =[If Ir Vf Vr];   %signal without noise
jj=1;
for jj=1:4
    Ifor1c(jj,1)=(2/N)*Ical(1,jj);
    Ifor1s(jj,1)=0;
    Ifor1m(jj,1)=(2/N)*abs(Ical(1,jj));
end
 
jj=1;
for jj=1:4
for t= 2:Nt
    if(t<=N)
        Ifor1c(jj,t) =Ifor1c(jj,t-1)+(2/N)*Ical(t,jj)*cos((t-1)*2*pi/(N));
        Ifor1s(jj,t)= Ifor1s(jj,t-1)+(2/N)*Ical(t,jj)*sin((t-1)*2*pi/(N));
    else
        Ifor1c(jj,t)=Ifor1c(jj,t-1)+(2/N)*(Ical(t,jj)-Ical(t-N,jj))*cos((t-(N+1))*2*pi/(N));
        Ifor1s(jj,t)=Ifor1s(jj,t-1)+(2/N)*(Ical(t,jj)-Ical(t-N,jj))*sin((t-(N+1))*2*pi/(N));
    end
%% magnitude and angle calculation at each sample
    Ifor1m(jj,t)= sqrt(Ifor1c(jj,t)^2+Ifor1s(jj,t)^2);
    phi_Ifor1(jj,t)= atan2(-Ifor1c(jj,t),Ifor1s(jj,t));
 end
end

%% complex phasor at each sample
 I_s = Ifor1c(1,:)-j*Ifor1s(1,:);
  I_r=Ifor1c(2,:)-j*Ifor1s(2,:);
  V_fa=Ifor1c(3,:)-j*Ifor1s(3,:);
   V_ra=Ifor1c(4,:)-j*Ifor1s(4,:);

In 24th line- Ifor1c(jj,1)=(2/N)*Ical(1,jj);- it shows error Operator '*' is not supported for operands of type 'struct'.

Answer 1

[Rik]

You are using an output for the load function (which you should), but that means Matlab will load the data to a struct. I'm guessing you mean this instead:

S=load('out.mat');
[If,Vf,Ir,Vr]=deal(S.If,S.Vf,S.Ir,S.Vr);