420 HANDBOOK OF ELECTRICAL ENGINEERING
Figure 15.7 Primary line currents in the transformers feeding a 12-pulse thyristor bridge, with the commutation
angleu= 5 ◦. The waveforms are composed of 25 harmonics, some of which are zero in magnitude.
Figure 15.8 Primary line currents in the transformers feeding a 12-pulse thyristor bridge, with the commutation
angleu= 5 ◦. The waveforms are composed of 43 harmonics, some of which are zero in magnitude.