A High-Voltage Isolation System Applied to Tram Energy Storage Devices
An energy storage device, high-voltage isolation technology, applied in the direction of electrical devices, vehicle energy storage, power management, etc., can solve the problems of increasing the number of train charging and discharging devices, wasting energy of energy storage devices, and affecting work efficiency, etc., to achieve shortening Effect of preparation time, avoiding waste, and reducing operating costs
Active Publication Date: 2020-02-18
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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[0005] Aiming at at least one defect or improvement requirement of the prior art, the present invention provides a high-voltage isolation system applied to a tram energy storage device. The "discharging-charging" operation of the device causes a great waste of electric energy of the energy storage device, and increases the number of train charging and discharging devices in the depot, which greatly affects the work efficiency
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0026] The existing tram energy storage device is directly connected to the high-voltage DC bus of the train, so that the high-voltage DC bus of the train is always in a charged state; therefore, it is necessary to discharge the on-board energy storage device before climbing on the roof. In order to ensure the safety of the workers who climb to the top; in order to realize that the energy storag...
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The invention discloses a high-voltage isolation system applied to an energy storage device of a tram. The high-voltage isolation system applied to the energy storage device of the tram comprises a bidirectional DC / DC converter and a pre-charging circuit; the bidirectional DC / DC converter is placed inside the tram, one end of the bidirectional DC / DC converter is connected witha high-voltage bus,and the other end of the bidirectional DC / DC converter is connected with the energy storage device through the pre-charging circuit; and the pre-charging circuit is disconnected during train sleep maintenance to cut off a power-on loop between the high-voltage bus and the energy storage device, so that the high-voltage bus is in an unpowered state.According to thehigh-voltage isolation system applied to the energy storage device of the tram, the tram does not need to be discharged before topclimbingoperation, the preparation time of the topclimbingoperation can be greatly shortened, and the efficiency of tram maintenance operation is improved; waste of residual electricity in the energy storage device is avoided, and the arrangement number of charging and discharging devices of the tram in avehicle section isdecreased, and the cost is lowered; and under the premise of ensuring the personal safety of maintenance personnel, the efficiency of tram operation and maintenance is significantlyimproved, the operating cost is lowered, and significant economic benefits are obtained.
Description
technical field [0001] The invention belongs to the technical field of power-off protection of energy storage devices, and more specifically relates to a high-voltage isolation system applied to energy storage devices of trams. Background technique [0002] The full-line non-grid vehicle-mounted energy storage tram has developed rapidly in recent years because it does not need a small amount of catenary on the entire line or only in some sections of the road, which has almost no impact on the urban landscape and height restrictions. [0003] The existing tram energy storage device is directly connected to the high-voltage DC bus of the train, so that the high-voltage DC bus of the train is always in a charged state; The on-board energy storage device performs discharge operation to ensure the safety of climbers. After the roof work is completed, the train needs to be recharged or towed by a road-rail vehicle before the train can move. According to the vehicle repair schedu...
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IPC IPC(8): B60L3/00B60L50/53
CPCY02T10/70Y02T10/72
Inventor 蒲思培邱绍峰许克亮缪东张浩殷勤李加祺李经伟林飞何武山
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP