...
Set the TCR delay angle to 90o and set the reactance to the value computed in section I, question 1. Plot the waveform of the voltage and current across the inductor. Indicate maximum and minimum instantaneous values of voltage and current. Plot the waveform of the current flowing in the thyristors and in ac the line. Plot and record the rms value of the TCR current.
For delay angles of 120o and 150o, repeat Question 1.
Plot the harmonic spectrum of the inductor current up the 20th harmonic, indicating harmonic order and amplitude for all 3 operating conditions (α = 90°, 120°, 150°). (Note: refer to Harmonics analysis using ScopeView for more details on how to plot the harmonic spectrum)
Record and plot the transfer characteristics of the TCR, rms line current and reactive power as a function of delay angle α (α = 90°, 120°, 150°, 180°).
Record and plot the voltage characteristics of the TCR as a function of reactive power and delay angle. Plot for values of α equal to (90°, 120°, 150°, 80°) and voltage equal to (0.2, 0.9, 1.0 pu). Note: Adjust the 345 kV AC source voltage such that the transformer secondary voltage is approximately (0.2, 0.9, 1.0 pu) for each value of α.
...