Dft Pro Gct – Pro & Complete

CIRCUIT 12PULSE_RECT SOURCE: AC_3PH_50Hz_230kV CONVERTER: GCT_BRIDGE (6 devices/arm) CONTROL: FIRING_ANGLE = 15deg ANALYSIS: HARMONIC_UPTO_50TH OUTPUT: THD, VOLTAGE_OVERSHOOT

Non-characteristic harmonics (e.g., 3rd, 5th) appeared only when firing angle asymmetry > 2%. Using DFT Pro's frequency sweep (1 kHz to 10 MHz), the impedance peak at (f_res \approx 3.2\ \textMHz) revealed a voltage overshoot factor: dft pro gct

[ \fracdi_Gdt = -\fracV_GKL_G ]

The model treats the GCT as a time-varying resistance: (R_on = 0.001\ \Omega), (R_off = 1\ M\Omega). 3.1 AC Side Harmonics (Without Filtering) DFT Pro computed the following characteristic harmonics for a 12-pulse converter (p=12): DFT Pro models non-linear components using harmonic Norton

[ V_peak = V_DC + L_\sigma \cdot \fracdidt = 1.15 \cdot V_DC ] VOLTAGE_OVERSHOOT Non-characteristic harmonics (e.g.

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Where (V_GK) is gate-cathode voltage and (L_G) is gate inductance. DFT Pro models non-linear components using harmonic Norton equivalents. Our model parameters: