Key technologies

The components and technologies needed for the fully electric operation of city buses without catenaries were developed within the collaborative »Schnellladesysteme für Elektrobusse im ÖPNV (SEB)« project (Fast Charging Systems for Electric Buses in Public Transport), which was funded by the German Federal Ministry of Education and Research (BMBF).
The Fraunhofer IVI coordinated the project.

The pantograph is a joint development of  Schunk Transit Systems GmbH and the Fraunhofer IVI. Using this pantograph, the electric capacity of 250 kW needed for one drive cycle can be transmitted within six minutes.

The required charging station was developed by M&P motion control and power electronics GmbH in Dresden. The charging station is also suitable for very short but intense pulse charging processes during passenger interchange.

For energy storage purposes, a highly compact lithium polymer battery with an energy content of only 85 kWh has been mounted on the 12-meter electric bus. The battery was manufactured by HOPPECKE Advanced Battery Technology GmbH from Zwickau, and the traction equipment was provided by Vossloh Kiepe GmbH.

A serial hybrid bus owned by the Fraunhofer IVI was used as a test platform. This bus was originally manufactured by Göppel Bus GmbH and equipped with traction equipment made by Vossloh Kiepe.