부하변동에 따른 철도차량 보조전원장치 역률특성 분석과 개선에 관한 연구
A Study on Improvement and Analysis for Power Factor Characteristics of Rolling Stock Auxiliary Power supply according to the Load Changes
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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.
Abstract
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.
참고문헌 (3)
- R. Y. Kim, "Voltage Stability Improvement of Feeding System via Reactive Power Control of Trains", Spring Conference of The Korean society for Railway
- J. Y. Kim, "Characteristics Analysis for Power and Current of Induction Motor before", after Power Factor, 2011, ~
- 정상훈, "한국형고속열차 보조전원장치 특성시험", 한국철도학회논문집, 10(1), pp.84~87 (2007), 한국철도학회