Title:
05625409_pulse_rectifier
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Description: PECTRUM of the input current drawn by the electric
drive from the network is affected by the used type of the
input rectifier. In the case of the diode rectifier, the number of
its pulses is decisive. Standard AC adjustable speed drives
utilize the input three phase six-pulse diode rectifier for the
AC-DC conversion. These drives generate harmonics into the
network, so the drawn current is not harmonic, but nonharmonic
with a high level of distortion if no harmonic filter
is used. The input current total harmonic distortion is
calculated from the formula
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