Drive system for a rail vehicle, rail vehicle having the drive system and methods for the forward movement of a rail vehicle

Patent metadata

Field	Value
Publication number	US-11535281-B2
Application number	US-201916506115-A
Country	US
Kind code	B2
Filing date	Jul 9, 2019
Priority date	Jul 9, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A drive system for a rail vehicle includes at least one drive motor and at least one cooling apparatus for cooling the at least one drive motor and/or other components of the drive system, in particular a current converter. The drive system is constructed and intended to use kinetic energy of the rail vehicle for operation of the cooling apparatus. A rail vehicle having the drive system and methods for the forward movement of a rail vehicle are also provided.

First claim

The invention claimed is:

1. A drive system for a rail vehicle configured as a car locomotive, the drive system comprising:
at least one permanent magnet-excited drive motor without self-ventilation;
at least one cooling apparatus for cooling said at least one drive motor;
said at least one cooling apparatus configured to be operated exclusively by kinetic energy of the rail vehicle during operation of the rail vehicle as a car locomotive.

2. The drive system according to claim 1 , which comprises an energy conversion device which is connected to cooling apparatus, said energy conversion apparatus configured to convert the kinetic energy of the rail vehicle into a form of energy being suitable for operation of said at least one-cooling apparatus.

3. The drive system according to claim 2 , wherein said energy conversion apparatus is a generator for generating electrical energy.

4. The drive system according to claim 2 , wherein said energy conversion apparatus is a hydraulic pump for generating a hydraulic circuit.

5. The drive system according to claim 2 , which further comprises a drive shaft, a gear unit shaft and a wheelset shaft, said energy conversion apparatus being disposed on at least one of said drive shaft or said-gear unit shaft or said wheelset shaft.

6. The drive system according to claim 1 , wherein said at least one cooling apparatus includes at least one of a ventilation apparatus or a fluid cooling apparatus.

7. A rail vehicle, comprising a drive system according to claim 1 .

8. The rail vehicle according to claim 7 , which further comprises a running gear and a vehicle body, said at least one cooling apparatus being disposed on at least one of said running gear or said vehicle body.

9. A method for the forward movement of a first rail vehicle, the method comprising the following steps:
providing a first rail vehicle including a drive system according to claim 1 ;
connecting the first rail vehicle to at least one second rail vehicle having a drive system;
using a tractive force of the drive system of the second rail vehicle to move the interconnected rail vehicles forward; and
using the at least one cooling apparatus to cool the at least one drive motor.

Assignees

• Siemens Mobility GmbH

Inventors

• Koerner Olaf

Classifications

• H02K9/19

  for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil · CPC title

• H02K9/04

  having means for generating a flow of cooling medium · CPC title

• H02K11/33

  Drive circuits, e.g. power electronics (H02K11/38 takes precedence) · CPC title

• B61C3/00 Primary

  Electric locomotives or railcars (characterised by power transmission B61C9/00; electrical features B60L; H02) · CPC title

• B61C17/00

  Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems · CPC title