Railroad work train comprising work vehicles

Abstract

A railroad work train comprises several work vehicles and an electrical distribution network that comprises a multi-source collector DC power supply bus (5) which is located in one of the vehicles and powers, via a primary inverter (6), an AC distribution bus (7) that supplies power to at least two of the work vehicles.

Claims

CLAIMS 1. Railway works train comprising at least one supply vehicle, at least one railway works vehicle equipped with one or more railway work tool drive devices (8.1), and an electrical distribution bus connecting at least the supply vehicle to the railway works vehicle for the direct or indirect electrical supply of the railway work tool drive device(s) (8.1) carried by the railway works vehicle, the distribution bus being alternating current (7), powered by a primary inverter (6) powered by a direct current power bus (5), the primary inverter (6) and the direct current power bus (5) being located in the supply vehicle, the railway works train comprising at least one switching device (31) capable of cutting off the power supply to the distribution bus during a transport circulation phase, characterized in that the switching device is capable of moving from a first position connecting the primary inverter (6) to the alternating current distribution bus (7) to a second position connecting the primary inverter (6) to a traction motor (18) of the supply vehicle.

2. Railway works train according to claim 1, characterized in that the direct current power supply bus (5) is supplied with direct current by one or more direct current sources located in or on the supply vehicle.

3. Railway works train according to claim 2, characterized in that the direct current source(s) include: a direct current collector (3) capable of collecting current from a direct current line (4) arranged along a railway track on which the works train runs, and / or a rectifier (15) powered by an alternating current collector (3) capable of collecting current from an alternating current line (4) arranged along the railway track on which the works train runs, and / or a battery (12) and / or a generator (13) driven by a heat engine (14).

4. Railway works train according to any one of the preceding claims, characterized in that it comprises at least two assemblies each comprising at least one traction motor (18) electrically powered in parallel, the switching device (31) being configured to allow the power supply of only one of the two traction motor assemblies (18), via an inverter (17) separate from the primary inverter (6), when the railway works train is in the works phase.

5. Railway works train according to any one of the preceding claims, characterized in that it comprises at least two assemblies each comprising at least one traction motor (18) electrically powered in parallel, the switching device (31) being configured to allow the power supply of the two traction motor assemblies (18), via an inverter (17) separate from the primary inverter (6), when the railway works train is in the works phase.

6. Railway works train according to any one of the preceding claims, characterized in that the alternating current distribution bus (7) is a three-phase bus.

7. Railway works train according to any one of the preceding claims, characterized in that the three-phase alternating current distribution bus (7) is at an effective voltage between phases equal to or greater than 190 V, preferably equal to or greater than 380 V, and less than 1000 V, preferably less than 600 V, for example 400 V.

8. Railway works train according to any one of the preceding claims, characterized in that the alternating current distribution bus (7) is configured to distribute an apparent electrical power greater than or equal to 500kVA, and preferably less than or equal to 600kVA.

9. Railway works train according to any one of the preceding claims, characterized in that the railway works vehicle comprises a local rectifier (30) supplied by the alternating current distribution bus. (7) and supplying a local direct current power bus (9) supplying one or more of the railway work tool drive devices (8.1).

10. Railway works train according to any one of the preceding claims, characterized in that the alternating current distribution bus (7) directly supplies at least one of the railway works tool drive devices (8.1).

11. Railway works train according to any one of the preceding claims, characterized in that the drive devices (8) include electric motors (20), and / or compressors (21), and / or hydraulic pumps (22).

12. Railway works train according to any one of the preceding claims, characterized in that the railway works tools (8.1) include tamping tools (23), and / or track lifting tools (24), and / or leveling tools, and / or leveling-shifting clamps, and / or stripping tools (25), and / or screening tools and / or stabilizing tools, and / or tools for laying, removing, replacing or maintaining sleepers, ballast and / or rails of a railway.

13. Railway works train according to any one of the preceding claims, characterized in that a sinusoidal filter (28) is interposed between the power inverter and the alternating current distribution bus.

14. Railway works train according to any one of the preceding claims, characterized in that the direct current power supply bus (5) supplies an auxiliary alternating current distribution bus (27) with apparent electrical power at least 5 times lower than the apparent electrical power of the alternating current distribution bus.

15. Railway works train according to any one of the preceding claims, characterized in that the supply vehicle comprises transport traction motors (18) supplied by the supply bus to direct current (5) independently of the alternating current distribution bus.

16. Railway works train according to claim 15, characterized in that the transport traction motors (18) have a nominal power greater than or equal to 150kW per unit.

17. Railway works train according to any one of the preceding claims, characterized in that one or more of the vehicles are equipped with working traction motors (10) powered directly or indirectly by the distribution bus.

18. Railway works train according to claim 17, characterized in that the working traction motors (10) have an apparent power of less than 150kW.

19. Railway works train according to any one of the preceding claims, characterized in that it comprises at least one additional railway works vehicle equipped with one or more additional railway works tool drive devices (8.1) powered by the electrical distribution bus.

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