Abstract:
본 발명인 대용량 직류-직류 컨버터를 활용한 직류 배전망용 전기자동차 다기능 충전장치에 관한 것으로, 직류 급전모선으로부터 전송된 전력을 하나의 대용량의 직류-직류 컨버터로 공급받아 다수의 전기자동차에 안정적으로 충전하기 위하여 다수의 충전 커넥터를 인출하고, 또한 반대로 철도 차량의 운행에 있어 필요한 전력이 부족할 경우에는 중앙 원격관리시스템의 제어를 통해 전기자동차의 전력을 철도전력으로 이용할 수 있도록 하며, 전기자동차에 연결되는 각 충전커넥터에 소형의 패널을 부착하여 충전관련 정보를 디스플레이할 수 있는 직류 배전망용 전기자동차 다기능 충전장치를 제공할 수 있는 대용량 직류-직류 컨버터를 활용한 직류 배전망용 전기자동차 다기능 충전장치에 관한 것이다.
Abstract:
본 발명은 밀폐된 진공 상태의 튜브를 철도 선로로 이용하여, 소음과 공기 저항을 최소화시켜 열차를 초고속으로 달릴 수 있도록 하는 튜브 철도 시스템(Tube Railway System)에 관한 것으로, 더욱 상세하게는 진공 상태(대기압의 1/3 ~ 1/1000)를 유지하는 것이 필요한 튜브 철도 시스템에서 작동 신호에 의해 튜브 통로를 빠른 속도로 차단하기 위한 차단막 장치를 튜브 선로 일정 구간마다 또는 특정 구간에 설치하여, 진공 유지에 문제가 발생하거나 또는 고의로 진공을 해제하고자 할 때 또는 열차를 비상 정지하고자 할 때 진공 차단막 장치를 동작시켜 해당 구간을 다른 구간과 격리시키고 그 구간만의 진공도를 다르게 관리할 수 있도록 하는 튜브 철도 시스템의 진공 관리 시스템과, 그 시스템에서 이용되는 진공 차단막 장치에 관한 것이다.
Abstract:
The present invention relates to a DC/AC compatible smart meter system in a DC electric railway system which includes: a first voltage sensor and a first current sensor which are installed in a DC system of a DC electric railway for measuring voltage and current, respectively; a second voltage sensor and a second current sensor which are installed in a DC system of an AC electric railway for measuring voltage and current, respectively; and a smart meter for analyzing data acquired from the first voltage sensor, first current sensor, second voltage sensor and second current sensor which are installed in the DC system and AC system, respectively and communicating with a remote site through wired/wireless communications. The smart meter includes: a data acquisition unit for simultaneously acquiring DC voltage and current, and AC voltage and current measured by the first voltage sensor, first current sensor, second voltage sensor and second current sensor, respectively; a data processing unit for analyzing and calculating an active power, a reactive power, an apparent power, a maximum power demand, a power factor and a harmonics, calculating energy loss and harmonics generation when AC/DC converting in a DC feeding system through the analyzed data, and calculating the time of use, the accumulated use (current) and the frequency of accidents of rectifier in a substation based on the accumulated data; and a communication unit for performing two-way communication with a remote server through the wired/wireless communications.
Abstract:
The present invention relates to a railway-connected electric vehicle charging power system based on a multi-functional energy storing device, comprising: a multi-functional charging device (100) directly connected to an electric vehicle charging system (10) to supply precharged power to an electric vehicle, and receive power from a battery of the electric vehicle in a railway power peak or an emergency for charge; a bidirectional converter (200) connected to a feeder bus line to control a charge of regenerated energy generated in a direct feeder system, and supplies charge power of the multi-functional charging device (100) to the direct feeder system if voltage descent of the direct feeder system becomes great; and a bypass switch (300) directly connected to the multi-functional charging device (100) and the electric vehicle charging system (10) and switches to supply the regenerated energy generated in the direct feeder system to the electric vehicle, and switches to directly supply power of the regenerated energy to the electric vehicle charging system if the multi-functional charging device (100) are fully charged. The present invention provides a multi-functional charging device which stores regenerated energy and new and renewable energy connected to the electric vehicle charging system to supply power to charge an electric vehicle, thereby storing power through the regenerated energy generated in the railway; and a new and renewable energy source charging under the power in an existing alternating current power network at night (time when not operating the railway).