Hey there,
我想计算3期逆变器的功率输出。因此，我必须对我的电压信号进行FFT，以获得基本的幅度。
In comparison to the FFT Tool from the Simulink powergui, my amplitude is always lower. I searched for some examples for a correct scaled FFT, but i cant find differences to my code.
f1 = ac_voltage_a.data（StecteSTATE：1：Stestentstate+2^15）;
g1 = hanning（长度（f1））。*f1;
dt=Tsample
vac_fenstera_Nfft = length(g1);
j = fft（g1）;
vac_fenstera_sfft = 2*abs（j）/vac_fenstera_nfft;
plot(1/dt * (0:(vac_fenstera_Nfft/2-1)) / vac_fenstera_Nfft, (vac_fenstera_sfft(1:vac_fenstera_Nfft/2)));
与PowerGui的FFT分析工具相比，我的基本幅度的值仅是大小的一半，即使我却使ABS*2。
Where is my fault?
Is it nessesary that the length of g1 is a multiple of 2? I think a DFT could also work out.
Regards
