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Reactive power compensation in railways based on AC boost choppers

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5 Author(s)
Raimondo, G. ; Dipt. di Ing. dell'Inf. (DII), Seconda Univ. degli Studi di Napoli, Aversa, Italy ; Ladoux, P. ; Lowinsky, A. ; Caron, H.
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In this study, a new topology, using AC choppers is proposed for reactive power compensation in 25 kV/50 Hz railway networks. The low losses of these converters compared to other solutions such as voltage-sourced inverters-based STATCOMs, makes this approach attractive for high-power, single-phase systems such as railway networks. A possible solution based on the controlled impedance concept working in boost mode is proposed and applied to a substation in the French rail network. Design method presented end simulation results which confirm the performance of this low-cost and low-loss solution. Finally, the experimental results achieved on a 1.2 MVAR prototype are presented.

Published in:

Electrical Systems in Transportation, IET  (Volume:2 ,  Issue: 4 )

Date of Publication:

December 2012

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