Page 431 - Handbook of Electrical Engineering
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420    HANDBOOK OF ELECTRICAL ENGINEERING

































              Figure 15.7  Primary line currents in the transformers feeding a 12-pulse thyristor bridge, with the commutation
                       ◦
              angle u = 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
                       ◦
              angle u = 5 . The waveforms are composed of 43 harmonics, some of which are zero in magnitude.
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