The present invention relates to a train direct current (DC) power supply system which can reduce a return current and a voltage drop. The train DC power supply system comprises: a rail and an electric car line connected between both substations to supply power to a train vehicle; a power supply line connected in parallel with the rail; and two or more converter units connected in parallel with the rail, electric car line, and power supply line between both substations and maintaining a voltage difference between the rail and the electric car line and a voltage difference between the rail and the electric car line to be the same.
본 발명의 철도 직류급전 시스템은, 철도차량에 전원을 공급하기 위해 양 변전소 사이에 연결된 레일 및 전차선; 상기 레일과 병렬로 연결되는 급전선; 및 상기 양 변전소 사이에 상기 레일, 전차선 및 상기 급전선과 병렬로 연결되며, 상기 레일 및 전차선 사이의 전압차와 상기 레일 및 급전선 사이의 전압차를 동일하게 유지하는 둘 이상의 컨버터부를 포함한다.
TRAIN POWER SUPPLY SYSTEM
철도 직류급전 시스템
2020-06-08
Patent
Electronic Resource
Korean
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