Leipzig, Germany

Delivery: 2003-2007

To cope with the volume of passengers, small and flexible vehicle units are needed by many transport authorities, particularly by small authorities, and as feeders for large transport authorities.

In 2003 the Leipziger Fahrzeugservice-Betriebe GmbH (LFB) developed the »Leoliner« on the basis of the following criteria:

> Vehicle width of 2.30 m
> Vehicle length of 20 - 23 m
> Reliable bogie technology
> State-of-the-art three-phase drive technology
> High low-floor share
> Flexibility due to traction ability
> Low procurement costs.

To begin with, two prototypes were built for the Leipziger Verkehrsbetriebe (LVB). Reliable Kiepe components were selected for the electrical vehicle equipment.

The concept prepared for the electrical vehicle equipment ensures high comfort for the passengers as well as reliable and low-maintenance operation for the operator. The key component in this concept is the roof-mounted equipment container, which comprises two interindependent traction inverters, a static on-board power converter as well as control functions for the vehicle coupling. When the roof-mounted equipment container is delivered, it has been cabled and pretested already and is ready for installation on the vehicle. Each of the fully selective power trains consists functionally of an IGBT traction inverter with its own traction control module, its own braking resistor and two traction motors. This concept, which prioritises optimal redundancy of the systems, ensures high availability of the vehicle.

It will be possible to make diagnoses for the delivered drive components with the help of the Windows-based Kiepe diagnostic system with extensive acquisition of operational data and event data. These data collected in the vehicle can be read out and evaluated by way of a commercial standard PC (laptop). This simplifies the trouble shooting much.

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