Current Harmonics Prediction Code
This code runs in MATLAB.
creator: Xiaolong Zhang, xiaolongzh88@gmail.com
Test V6.1 voltage.
Test V6.2 current with LC and Resistive load.
Test V6.3 include filter inductor resistance into model.
Test V6.4 motor current prediction.
Test V6.5 motor current prediction. read in ia/ib/ic/vab in seperate Excel files.
Test V6.6 add motor impedance nonlinear model (2022.4).
Test V6.8 use new filter parameters and new analytical impedance model (2022.11.15). add R_c to reference voltage (modulation index) setting function. change capacitor bank to Y connection. add R_c to the calculation of Veq.
Test V6.9 add capacitor's ESL (including cable inductance).
Test V6.10 Sawtooth carrier - use phase angle representation to calculate harmonics. add deadtime PWM spectrum #9,#10,#11,#12,#13 and verified. dead time loss is included in M calculation.
Test V6.11 Use only one phase in each sequence circuit calculation and then inverse. transform back to all phases. Phase shift in Vs1 due to deadtime is included in M calculation by vetorial sum.
Test V6.12 Modify modulation type 14 with switch and diode voltage drop distortion, changed deadtime expression, verified with test.
Test V6.13 Improved linear circuit impedance and harmonic calculation.
Test V6.14 Compare frequency-invariant method (ita0 = vsa./Zeq, line 1670-1689) vs. proposed method (it1 = vs1./Zeq1; it2 = vs2./Zeq2; ita = it1 + it2), constrasted plot in Figure 45, prediction error in Figure 46.
Test V6.15 Simplified harmonic synthesis using complex-number representation: Cmn_a = Amn_ph.exp(jTheta_a)... (line 1296-1233).