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Focusing on the freight-train dominant electrical railway power system (ERPS) mixed with ac–dc and ac–dc–ac locomotives (its power factorε[0.70,0.84]), this paper proposes a power factor-oriented railway power flow controller (RPFC) for the power quality improvement of ERPS. The comprehensive relationship of the primary power factor, converter capacity, and the two-phase load currents is built in...
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