3상/단상 BTB 전압형 컨버터 기반의 전기철도 급전 시스템의 전압제어 향상을 위한 BESS 적용

초록

The scott transformer changes three-phase power to two single-phase power. However, this method causesunbalance and fluctuation of voltage by the change of electric railload. Recently, the AC railway system based on 3？/1？back-to-back (BTB) voltage source converter (VSC) has been proposed to solve these problems. Meanwhile, batteryenergy storage system (BESS) is used to compensate voltage instantaneously in power system. In this paper, BESSapplication to the AC railway system based on 3？/1？ BTB VSC is suggested to compensate voltage instantaneously. Theapplication effect is shown through simulation using MATLAB/SIMULINK.

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