<span lang="EN-US">Twelve-pulse rectification system had been widely integrated in today’s DC traction power sub-station (DC-TPSS). This configuration successfully mitigated low order harmonic distortion. As some research findings confirmed that the dc voltage and current ripple factors may further minimize by increasing number of pulses to 18, 24, or 36. paper presented a simulation stud...

In electrified railways, traction load not only fluctuates between peaks and valleys, but also has a situation of low utilization rate average throughout the day short overload. The transformer selects capacity with peak as demand boundary, which will cause to be even lead economic decline power supply system. This article summarizes existing configuration methods for optimization transformer. ...

The single-phase traction load has essentially an unbalance characteristic at the Point of Common Coupling (PCC), which injects harmonic into the utility grid. In this paper, the effect of harmonic distortion and unbalance loading are investigated simultaneously for electrical railway systems. Special traction transformers (i.e. single-phase, V/V, Wye-Delta, Scott, and Le Blanc) are used betwee...