Power supply for critical railroad equipment

Patent metadata

Field	Value
Publication number	US-10027142-B2
Application number	US-201615040750-A
Country	US
Kind code	B2
Filing date	Feb 10, 2016
Priority date	Aug 23, 2013
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A power supply system for an electrical equipment comprises a first power supply module for supplying power to the electrical equipment, wherein the first power supply module is connectable to a first electrical network and is adapted for converting a first input current from the first electrical network to an output current suppliable to the electrical equipment; a second power supply module for supplying electrical power to the electrical equipment, wherein the second power supply module is connectable to a second electrical network of different frequency and/or different voltage as the first electrical network and is adapted for converting a second input current from the second electrical network to the output current, when the first power supply module is not able to converting the first input current; and an electrical energy storage for supplying electrical power to the electrical equipment, wherein the electrical energy storage is adapted for providing the output current, when the first and/or second power supply module is not able to convert the first and/or second input current.

First claim

The invention claimed is:

1. A power supply system for an electrical equipment, the power supply system comprising:
a first power supply module for supplying power to the electrical equipment; and
a second power supply module and/or a third power supply module for supplying power to the electrical equipment;
wherein the first power supply module is connectable to a first electrical network, is adapted for converting a first input current with a frequency of 50 Hz or 60 Hz from the first electrical network to an output current suppliable to the electrical equipment and comprises a first electrical battery adapted for being charged by the first power supply module;
wherein the second power supply module is connectable to a second electrical network, is adapted for converting a second input current with a frequency of 16⅔ Hz from the second electrical network to the output current and comprises a second electrical battery adapted for being charged by the second power supply module;
wherein the third power supply module is connectable to a third electrical network, is adapted for converting a third DC input current from the third electrical network to the output current and comprises a third electrical battery adapted for being charged by the third power supply module;
wherein the first, second and/or third power supply module comprises a voltage booster for increasing a DC link voltage supplied to a first, second and/or third inverter.

2. The power supply system of claim 1 , wherein the first, second and/or third electrical battery is adapted for being charged, when the first, second and/or third power supply module receives electrical power from the first, second and/or third network.

3. The power supply system of claim 1 ,
wherein, when the first, second and/or third second power supply modules are not able to convert the first, second and/or third input current, the first, second and/or third electrical battery is electrically connected to a first, second and/or third inverter of the first, second and/or third power supply module for generating the output current.

4. The power supply system of claim 1 , wherein the first, second and/or third electrical battery is connectable to the DC link.

5. The power supply system of claim 1 , wherein the first input current is a three-phase current.

6. The power supply system of claim 1 ,
wherein the electrical equipment comprises loads of a railroad system.

7. The power supply system of claim 1 , wherein the first, second and/or third power supply module comprising at least one of:
an input rectifier, an input filter, a DC/DC battery charger, an output filter, and a local bypass switch for disconnecting the power supply module for bypassing the power supply module.

8. The power supply system of claim 1 , further comprising:
a central bypass switch for bypassing all power supply modules simultaneously.

9. The power supply system of claim 1 , further comprising:
a cabinet frame for supporting the power supply modules.

10. The power supply system of claim 1 , further comprising:
a control device, which is adapted to control the power supply modules.

11. A method for maintaining the power supply of an electrical equipment, the method comprising:
supplying the electrical equipment with an output current from a first power supply module converting a first input current with a frequency of 50 Hz or 60 Hz from a first electrical network;
in the case, the first power supply module is not able to convert the first input current, supplying the electrical equipment with the output current from a second power supply module converting a second input current with a frequency of 16⅔ Hz from a second electrical network and/or a third power supply module converting a third DC input current from a third electrical network;
charging a first electrical battery by the first power supply module;
charging one of a second electrical battery by the second power supply module or a third electrical battery by the third power supply module;
in the case, the power supply modules are not able to convert the first and/or second input current, supplying the electrical equipment with power from at least one of the first, second and third electrical battery;
wherein the first, second and/or third electrical battery is adapted for being charged, when the first, second and/or third power supply module receives electrical power from the first, second and/or third network;
wherein the first, second and/or third power supply module comprises a voltage booster for increasing a DC link voltage supplied to a first, second and/or third inverter;
wherein the first, second and/or third electrical battery is connectable to the DC link.

12. The power supply system of claim 1 ,
wherein the first input current is a three-phase current;
wherein the electrical equipment comprises loads of a railroad system;
wherein the first, second and/or third power supply module comprising at least one of an input rectifier, an input filter, a DC/DC battery charger, an output filter, a local bypass switch for disconnecting the power supply module for bypassing the power supply module;
further comprising a central bypass switch for bypassing all power supply modules simultaneously;
further comprising a cabinet frame for supporting the power supply modules; and
further comprising a control device, which is adapted to control the power supply modules.

13. The power supply system of claim 1 ,
wherein the first input current is a three-phase current;
wherein the electrical equipment comprises loads of a railroad system;
wherein the first, second and/or third power supply module comprising at least one of an input rectifier, an input filter, a DC/DC battery charger, an output filter, a local bypass switch for disconnecting the power supply module for bypassing the power supply module;
further comprising a central bypass switch for bypassing all power supply modules simultaneously; and
further comprising a cabinet frame for supporting the power supply modules.

14. The power supply system of claim 1 ,
wherein the first input current is a three-phase current;
wherein the electrical equipment comprises loads of a railroad system;
wherein the first, second and/or third power supply module comprising at least one of an input rectifier, an input filter, a DC/DC battery charger, an output filter, a local bypass switch for disconnecting the power supply module for bypassing the power supply module; and
further comprising a central bypass switch for bypassing all power supply modules simultaneously.

15. The power supply system of claim 1 ,
wherein the first input current is a three-phase current;
wherein the electrical equipment comprises loads of a railroad system; and
wherein the first, second and/or third power supply module comprising at least one of an input rectifier, an input filter, a DC/DC battery charger, an output filter, a local bypass switch for disconnecting the power supply module for bypassing the power supply module.

16. A power supply system for an electrical equipment, the power supply system comprising:
a first power supply module for supplying power to the electrical equipment;
a second power supply module and/or a third power supply module for supplying power to the electrical equipment;
wherein the first power supply module is connectable to a first electrical network, is adapted for converting a first input current with a frequency of 50 Hz or 60 Hz from the first electrical network to an output current suppliable to the electrical equipment and comprises

Assignees

• Abb Technology Ag
• Abb Schweiz Ag

Inventors

• Birrer Markus

Classifications

• H02J7/575 Primary

  Parallel/serial switching of connection of batteries to charge or load circuit · CPC title

• B61L1/00 Primary

  Devices along the route controlled by interaction with the vehicle or train (detonators B61L5/20; operation of points or signals by passage of the vehicle B61L11/00, B61L13/00; operation of gates, or gates and signals, by approaching vehicle B61L29/18) · CPC title

• B61L29/00

  Safety means for rail/road crossing traffic · CPC title

• B61L5/00

  Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals (B61L11/00 takes precedence) · CPC title

• B60M5/00

  Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents (insulating rail joints E01B11/54; conductive connections between rails in general H01R3/00, H01R4/00, H01R4/70) · CPC title