Wireless underground power supply for trolley buses and transferability to other vehicle categories

Due to its environmental benefits and the minimal noise emissions the electric drive becomes increasingly important particularly in inner city areas. The significant disadvantage on electric driving is the storing problem of the electrical energy. Electrical power supply on the route gives an elegant opportunity to solve this problem. Based on inductive power transmission a more advanced solution is represented by a wireless underground energy supply. Due to this concept a smaller and less costly onboard electricity storage unit is required. If the infrastructure exists it is obvious to use it also for other lighter vehicle categories as passenger cars and delivery trucks. Within this publication the research methodology, the vehicle technology as well as a concept for the charging infrastructure in the city center of Vienna will be presented.