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Method of powering emergency auxiliary loads, auxiliary converter and railway vehicle for this method

A technology for railway vehicles and auxiliary loads, applied in the power supply of auxiliary motors, railway vehicles, current collectors, etc., can solve problems such as high manufacturing costs, and achieve the effect of reducing cost and volume

Active Publication Date: 2009-02-18
ALSTOM TRANSPORT TECH SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] This represents a large amount of large equipment and the resulting higher manufacturing costs
[0030] The technical problem is to reduce the mass and volume of equipment required for normal mode and emergency mode while preserving the harmonic filtering performance achieved by the structure of existing equipment

Method used

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  • Method of powering emergency auxiliary loads, auxiliary converter and railway vehicle for this method
  • Method of powering emergency auxiliary loads, auxiliary converter and railway vehicle for this method
  • Method of powering emergency auxiliary loads, auxiliary converter and railway vehicle for this method

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Embodiment Construction

[0093] In the remainder of this specification, features and functions known to those skilled in the art will not be described in detail.

[0094] FIG. 1 shows a railway vehicle 2 powered by a pantograph 4 in contact with a supply catenary 6 . The catenary 6 carries high voltage, ie a DC voltage typically having a rating of 600Vdc or higher. For example, the supply voltage of the catenary 6 is here 1500 Vdc.

[0095] The vehicle 2 is, for example, an underground railway, a train or a tram equipped with emergency ventilation.

[0096] The vehicle 2 includes an auxiliary converter 10 that supplies a three-phase medium voltage to an auxiliary network 12 . The three-phase voltage on bus 12 is 400Vac.

[0097] The auxiliary network 12 comprises three phase conductors 14 to 16 and a neutral conductor 18 .

[0098] Typically, auxiliary network 12 extends through various compartments in vehicle 2 .

[0099] As a variant, the vehicle 2 comprises at least two auxiliary converters an...

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PUM

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Abstract

The method relates to a method for powering emergency auxiliary loads, an auxiliary converter and railway vehicle for this method. The vehicle method for powering the emergency auxiliary loads (22) of railway vehicles comprises the following steps: providing at least one controllable power switching electronic unit in each switch of a charger for switching current flowed in the switch located armand in a normal mode, controlling the switching controllable electronic unit from a passing state to a non-passing state or vice-versa at determined instants (210) for rectifying three-phase voltage.A switching frequency of a transistor is at least twenty times higher than a base frequency of the three-phase voltage. In an emergency mode the control unit controls the switching of the electronic unit to produce an auxiliary three-phase voltage system for the emergency auxiliary loads.

Description

technical field [0001] The invention relates to a method for powering emergency auxiliary loads, an auxiliary converter and a railway vehicle utilizing the method. Background technique [0002] Methods already exist for powering emergency auxiliary loads of railway vehicles from on-board rechargeable electrical energy storage devices on board the vehicles. In the emergency mode, the energy storage device is capable of storing enough energy to allow the emergency auxiliary load to operate on the energy source alone for approximately more than thirty minutes, typically between 30 minutes and 1 hour. [0003] Existing methods include a normal mode in which a battery charger powers a low voltage auxiliary load and recharges an electrical energy storage device, the charger is capable of generating a DC voltage capable of recharging the electrical energy storage device from a three-phase supply . [0004] The proposed invention concerns the improvement of auxiliary converters: ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04H02M7/5387
CPCB60L3/00B60L2200/26B60L9/00B60L1/00B60L1/003H02J9/062B60L50/53H02J2310/40Y02B70/30Y02T10/70Y02T30/00Y04S20/20B60L1/16H02J7/00
Inventor J·布萨达让-埃马努埃尔·马塞鲁斯
Owner ALSTOM TRANSPORT TECH SAS
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