Active Elimination of Low-Frequency Harmonics of Traction Current-Source Active Rectifier
Abstract
In this paper, a new control approach in activesuppression of low-frequency disturbances in the trolleywire
current using resonant (R) controllers is presented. It
is dedicated for a single-phase active current-source
rectifier (ACSR) developed within the research into a new
generation of main traction converters employing the
medium-frequency transformer dedicated for suburban
units operating on both ac electrification systems of 25
kV/50 Hz and 15 kV/16,7 Hz. Proper function of proposed
control strategy with a new compensative principle has been
verified by simulations and large experimental study made
on designed small-scale prototype of ACSR of the rated
power of 7 kVA.
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