AC 25kV, DC 3kV 겸용 전동차용 추진제어시스템 개발 …

1 2012 KSR2012A339 AC 25kV, DC 3kV Development for Propulsion System Applied Dual voltage AC25kV and DC3kV * , *, *, * Lee, Kwon, Chung, Han Abstract The electric multiple unit(EMU) uses AC power or DC power according to the feeding voltage of power station. so the EMU that is designed for one voltage level can't operate the rail way applied other voltage level. For solving this problem, we already have developed the dual voltage system EMU for AC25kV and and we have used them in revenue service interior. In foreign countries, there are various voltage level AC25kV/50Hz/60Hz, DC750V, , DC3kV, etc. In this document, we describe the development and application for the propulsion system applied in AC25kV, DC3kV dual voltage. Keywords : Propulsion system, Dual voltage AC , DC.

2 AC/DC AC/DC AC25kV DC1500V . AC25kV DC 3,000V . : , , 1. AC/DC , AC25kV/50Hz DC3kV . AC25kV DC . , .. : ( ) * ( ) 2. AC/DC AC/DC AC25kV DC , AC/DC . AC DC . , AC 25kV.

3 , ADCg(AC/DC Change over switch, AC/DC ) AC/DC . AC ADCg MTr(Main Transformer, ) , 25kV AC1,040V . DC ADCg HSCB(High Speed Circuit Breaker, DC ) , HSCB DC . Fig. 1 Circuit Diagram for AC25 Dual Voltage System AC25kV/DC3kV DC 750V, DC , AC25kV , 3 DC 3kV . AC25kV DC3kV , AC25kV, DC3kV . AC25kV DC3kV . AC25kV/DC3kV , ADCg(AC/DC Change Over Switch, AC/DC ), DCES(DC Earthing Switch, DC ), HSCB(High Speed Circuit Breaker, DC ), MCB(Main Circuit Breaker, AC ), MTR(Main Transformer, ), DC(Converter/Inverter, ).

4 Fig. 2 Circuit Diagram for AC25 Dual Voltage System , Ta ble 1 . (1) ACPT(AC Potential Tranducer) : AC . (2) ADCg(AD/DC Changeover Switch) : AC/DC AC DC . (3) DCES(DC Earthing Switch) : DC DC , AC DC . (4) MCB(Main Circuit Breaker) : AC AC MTR . (5) MTR(Main Transformer) : AC AC . (6) HSCB(High Speed Circuit Breaker) : DC DC . (7) CI(Converter Inverter) : DC3kV U,V,W3 . Table 1 Component for Dual Voltage Propulsion System No. Component Properties 1 ACPT Rated Voltage 30 kV Rated Frequency 60/50 Hz Rated Impulse Withstand Voltage 170 kV Accuracy Level 2 ADCg Rated Voltage kV Rated Frequency 60/50 Hz Rated Current 2,000 A 3 DCES Rated Voltage kV Rated Frequency 60/50 Hz Rated Current 2,000 A 4 MCB Rated Voltage kVac Rated Frequency 60/50 Hz Rated Current 1,000 A 5 MTR Rated Capacity 1st :2,600kVA 2nd :2,350kVA( ) Rated Frequency 60/50 Hz Input Voltage 1st:AC25kV 2nd Input Current 1st :104A 2nd :4x338A 6 HSCB Rated Voltage DC 3,600V Rated Current 2,300A 7 CI Input Voltage AC 25kV, 50Hz / DC 3kV Input / Output for Converter Input : Output : DC3kV Input / Output for Inverter Input : DC3kV( ~ ) Output.

5 AC 0~ Control Capacity 250kW x 4, Parallel 1) AC -. AC 25kV ACPT . -. AC ADCg AC MCB AC . -. MCB on MCB AC MTR AC . -. AC 25kV MTR . -.. 2) DC -. DC 3kV ACPT . -. DC DCES DC . -. ADCg DCES DC DC , DC3kV HSCB . -. HSCB MCB on , DC 3kV . -. DC3kV . DC AC , DC 3kV AC . Fig. 3 Test Result Chart for Running at DC/AC Changeover Section 3. AC25kV/DC3kV AC DC.

6 DC3kV , AC25kV DC3kV.