Innovative electrical drive solutions
structure and management of necessary infrastructures for the

implementation of individual and public electro mobility
on road, railway and in coastal waters.

Case studies and development of concepts for selected areas.



The working package deals with the necessary setup of a charging infrastructure for electro mobility and its effects on the existing power grid. Furthermore it will look into new possibilities for the use of electrically driven, emission free vehicles (busses etc.) to replace existing diesel versions in public transportation and develop the associated planning and charging infrastructure necessities.


A. Structure and management of necessary infrastructure

In Germany the transport sector accounts for around 30% of total energy consumption. Considering the climate challenges and the shrinking oil reserves, electro mobility can become an important prerequisite for the creation of a sustainable transport basing its energy requirements on local onshore or offshore windmills. Electro mobility is to a wide extent determined by important factors such as energy storage capacity of batteries, effectiveness of vehicles, operating distance, as well as charging and electrical grid infrastructure. Regarding the latter a specialized charging infrastructure for electric vehicles is at the moment usually not available. Also importantly, the existing electrical grid infrastructure is generally not prepared for connection of electric vehicles on a larger scale.

This implies that out-scaling of electro mobility may be delayed due to the fact that the electrical grid infrastructure is often not prepared for supplying the considerable electric power required to charge electric vehicles. Therefore, investigations and development of concepts and technologies are required in order to handle the obstacles to electro mobility out-scaling connected with charging and electrical grid infrastructure. In this connection it is also important to consider the possibilities for charging and de-charging batteries of electric vehicles connected to the electrical grid. This can help balancing production and use of electricity on the grid making it more robust.

B. Innovative electrical drives for public transportation and coastal waters
Grid free electrical drive solutions for public transportation (bus/railway) has been paid little to no attention in Germany or Denmark up to now. But especially those mobility solutions will enable us on one hand to make use of renewable energy where it is being produced. On the other hand an improvement of drive efficiency and therefore energy consumption will reduce the amount of local CO2-emissions and noise especially within cities and villages.

The use of electric drives to propel boats will have the same effect in coastal and inland waters. An emission free motor will at the same time reduce air- and water-pollution by oil and fuel. Furthermore it will drastically reduce noise disturbances on yachts and sailboats.

To evaluate possible application areas for grid free electrical drive solution a detailed analysis of the existing public transport system in the Schleswig-K.E.R.N area and southern Denmark is necessary and will be conducted within the project.

Finally, based on results of the conducted analysis and existing competence for the development of electrical machines at the Flensburg University of Applied Science, the possibility for new drive solutions and motor technologies for the application in busses, trains and seagoing vessels will be analyzed and it will be looked into the possible involvement of local industries (automotive industry, power electronics, motor technology, maritime technology) in those new developments.


Objectives, activities and timeplan:

A. Structure and management of necessary infrastructure

  1. Develop a concept supporting decisions regarding implementation of electric mobility in specific geographic zones considering parameters as grid infrastructure, use of renewable energy and traffic circulation.
  2. In selected areas (e.g. county of Nordfriesland and Flensburg) the existing power grid will be analyzed for different time scenarios (5, 10, 15 years) for different degrees of out-scaling of electric mobility.

B. Innovative electrical drives for public transportation and coastal waters

  1. Analyze the potential for innercity and regional public transport on roads.
  2. Conceptional design and development of new drive solutions for publiv transport on roads.
  3. Conceptional design and development of grid free drive solutions for trains in selected areas.
  4. Analyze the possibility for electrically powered public transport on not electrified railway section (grid free).
  5. Analyze, conceptional design and possible development of electric drive solutions for seagoing vessels in coastal waters.
  6. Development and design of an emission-free electric mobility-concept for public transport in the county of Nordfriesland.


Results & Publications

During the project a scope of action for the determination of the necessary charging infrastructure for individual e-mobility for the local region was developed, which can be transferred to comparable regions in Europe. This included detailed analysis for the necessary charging network in the cities of Flensburg, Husum and Schleswig.

Furthermore concepts for the implementation of grid free electric public transport on rail  (Download in German) and road (Download in German)  including Total Cost of Ownership (TCO) analysis were developed.  Exemplary a feasibility study for the county of Nordfriesland was conducted (Download in German).

In the field of innovative drive technology two new permanent magnet motors without rare earth materials were developed. One as a wheel hub motor (60 kW) for railway wagons and busses and one (11 kW) for boats.

Concept overview: (Download in German)

Conclusions, Perspectives & Applications

The achieved results have indicated, that electromobility with climate friendly and quiet busses is technically and economically already practicable in the analyzed regions. However cumulative energy balances to outlay the necessary battery size for the bus and necessary charging infrastructure have to be done upfront, to define a suitable overall system. Based on this system a TCO calculation can be completed to minimize the economic risk of the changeover process. On the bases of this information, a conversion to electric busses for public transport is already possible.


Business Opportunities

The e-Mobility market for public transport and commercial vehicles is in the buildup phase. Next to OEMs, which have until now no battery busses in their inventory, especially startups from Europe and China are very active in pushing the market. As a result the market is also open for small and medium businesses of the local region, specializing as suppliers for electronic components and service for electric vehicles.


Responsible partner:

Fachhochschule Flensburg (FH-Fl)
Kanzleistraße 91-93, 24943 Flensburg

Prof. Dr. Joachim Berg

Jens Schröder
+49 461 805 1208

+49 461 805 1427