Drive system for a rail vehicle

A drive system and rail vehicle technology, applied in the field of rail vehicles, can solve problems such as expensive, and achieve the effects of reducing requirements, reducing costs, and reducing leakage inductance

Active Publication Date: 2019-05-21
SIEMENS MOBILITY GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Power switches based on power semiconductors are significantly more expensive than mechanical main switches with regard to the power that can be switched

Method used

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  • Drive system for a rail vehicle
  • Drive system for a rail vehicle
  • Drive system for a rail vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0040] figure 1 A drive system 1 of a rail vehicle is shown. The drive system has a grid connection 12 for connection to a slip feeder 10 . As an alternative to the contact rail 10 , it is also possible to supply the vehicle with the aid of a contact rail. The current collector 8 makes contact with the contact rail 10 or the busbar. The grid connection 12 is connected to the primary winding 31 of the transformer 3 . A main switch 2 is arranged between the transformer 3 and the grid connection 12 , which makes it possible to interrupt the current flow, in particular during a short circuit in a rail vehicle. In order to detect undesirably or unacceptably high currents, it has proven to be advantageous to provide a current transformer 9 in the circuit. In order to close the circuit via the primary winding of the transformer, the primary winding is also connected to the wheel and the guide rail via the ground connection 18 .

[0041] The secondary winding 32 is connected to the...

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PUM

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Abstract

The invention relates to a drive system (1) for a rail vehicle having a transformer (3), a main switch (2) and a grid connection (12), wherein the main switch (2) is arranged between the grid connection (13) and a primary winding (31) of the transformer (3). To improve the drive system, it is proposed that the transformer (3) has a short-circuit voltage (Uk) of no more than 25%, wherein the main switch (2) has a first series circuit (25) comprising at least two power semiconductors (21, 21a, 21b), wherein a first power semiconductor (21a) from the at least two power semiconductors (21) can beused to disconnect a current (I1,forward) through the first series circuit (25) in the direction from the grid connection (12) to the transformer (3), and a second power semiconductor (21b) from the at least two power semiconductors (21) can be used to disconnect a current (I1,return) through the first series circuit (25) in the direction from the transformer (3) to the grid connection (12). Further, the invention relates to a rail vehicle having such a drive system, wherein the grid connection (12) of the drive system (1) is electrically connected to a current collector (8), the rail vehiclebeing provided for operation in an AC system.

Description

technical field [0001] The invention relates to a drive system for a rail vehicle having a transformer, a main switch and a mains connection, wherein the main switch is arranged between the mains connection and the primary winding of the transformer. Furthermore, the invention relates to a rail vehicle having such a drive system. Furthermore, the invention relates to a method for operating such a drive system or such a rail vehicle, in which a power connection of the drive system is electrically connected to a contact rail or a contact rail by means of a current collector. Furthermore, the invention relates to the use of main switches in rail vehicles. Background technique [0002] Rail vehicles typically have an electric drive system with a transformer, converter and traction motors. Transformers are used to match the voltage amplitude of the trolley feeder or contact rail to the voltage of the drive system. The conductor rails are no longer explicitly mentioned below, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L3/04B60L9/00H02H3/087
CPCB60L3/003B60L3/0069B60L3/0092B60L3/04B60L9/00H02H3/05H02H3/087B60L2200/26B60L2240/429B60L2240/527
Inventor M-M.巴克兰B.拉斯卡A.纳格尔
Owner SIEMENS MOBILITY GMBH
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