Abstract
Existing dc high-power locomotives at standard input voltages of 3 kV or 1.5 kV can be connected to high-voltage contact systems operated at a level of dc voltage that is n times higher via a novel n-cell capacitor, switching, bidirectional converter. Each cell voltage is defined by the locomotive power train DC input level, thus, the balancing of capacitor voltages is not required. PSIM-simulation has confirmed the positive properties of the scheme.
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