| Abstract |
In the paper, harmonic pollution in electrical plants supplying 6-pulse converters is evaluated by analytical procedures, with particular attemption to the influence of plant parameters on harmonic content of AC current. In particular, amplitude and phase of harmonic currents injected by converters are studied with reference to load and plant parameters, like e.m.f., DC reactance and resistance, protection and supply reactances. It is shown that, dependently on plant parameters and e.m.f. values, some harmonic currents could become negligible or take values higher than those expected from the ideal case of rectangular current waveform, which is often considered the 'worst' case for harmonic current amplitudes. |
