Harmonic source modeling method based on actual measured current characteristic curve fitting

The present invention discloses a harmonic source modeling method based on the measured current characteristic curve fitting, which is characterized by comprising the following steps: 1) load the actual nonlinear device voltage and current waveforms for testing; 2) according to the actual voltage generating a reference waveform of a voltage waveform; 3) the current curve plotted Found; 4) using a stepwise manner to the measured current characteristic polynomial curve fitting; 5) in harmonic source model output control program according to the results of the fitting; simple model structure of the present invention , novel and unique method, it is possible to accurately reproduce the actual current waveform.