부하변동에 따른 철도차량 보조전원장치 역률특성 분석과 개선에 관한 연구

초록

The active power that makes up the power factor plays an important role in ensuring the efficient energy use and stability of the system. The rolling stock has variable characteristics in the power factor of auxiliary power supply that used for cooling (inductive loads) and heating (resistance loads) more than 90% of the auxiliary power supply according to the season. The power factor of the auxiliary power supply at electric vehicles used 80% at the motor driving system and designed as a power factor of 85% at the static inverter (SIV) driving system does not reflect the characteristics of the load according to the season. In this study, in order to prevent the auxiliary power supply from reduction phenomenon of power factor due to the increase of an inductive load during cooling in summer, We present a more stable auxiliary power supply operating plan during air cooling in summer to install capacitors for power factor correction in parallel with the induction motor in cooler to ensure a stable system.

키워드