A new compensation system for Vv cophase traction power supply system

To solve the power quality problems in V/v co-phase railway power supply system effectively and economically, a compensation system based on hybrid power quality compensator (HPQC) under new topology is proposed in this paper. Compared with traditional topology compensation system, the HPQC under new topology has the characteristic of saving capacity. The optimal design of passive components (LC) and active devices (converters) of HPQC is presented, which is suitable for the fluctuating railway load. Moreover, the control strategy of HPQC under the new compensation system is analyzed, and the system meets the requirement of compensation as aspect. Finally, the simulation results verify the effectiveness and capacity decreasing of proposed new compensation system.