Siemens ELFA Drive System for Hybrid Electric Vehicles

Concerned with fuel consumption and emissions, especially public transportation in urban areas, the ELFA electric drive system has been developed for hybrid bus applications. This modular system provides bus manufactures a cost effective solution with a maximum degree of design flexibility. The system is adaptable to buses with a wide variety of energy storage devices, power sources, and hybrid configurations. This paper introduces the characteristics of the ELFA hybrid system and presents performance results of buses which have been equipped with the system.