Phase shift in in FFT Harmonics results

Hi Guys,

I am using the fft_powerscope function to evalute a simulink output signal. My problem is, that the recreated signal does not ressemble the original signal. There seems to be a phase shift somewhere. Can you help me find the error? I shared all the data that I used.

order= z_46.fft_iabc.freq./z_46.fft_iabc.fundamental;

phase= z_46.fft_iabc.phase;

for y=1:length(phase)

phase2(y,1)=phase(y)-phase(2)*(y-1);

end

fs = 1000;

Ts = 1/fs;

duration = 10;

t = 0 : Ts : duration-Ts;

mag= z_46.fft_iabc.mag./ z_46.fft_iabc.magFundamental;

x=mag(1);

M=[order,mag,phase2];

phase=phase*pi/180;

for q=2:length(M)

x=x+mag(q)*sin(2*pi* (q-1)*t+phase(q));

end

Would gladly appreciate your help. The fft start time from the orginal signal is in the data set.