An Advanced Traction Power Supply System in Electrified Railway

Recent years, with the rapid development of high-speed railway (HSR), the negative sequence (NS) problems and the usage of regenerative braking energy (RBE) in electrified railway have aroused wide-spread attention from related areas. To address those problems, this paper proposed a new energy storage traction power supply system (ES-TPSS), which combine the power flower controller (PFC) and the energy storage system (ESS). Furthermore, a coordinated control strategy for ES-TPSS is presented to realize effective switching between different working patterns. Finally, the effectiveness of proposed system and its control strategy is verified by a simulation.