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Multimode charging of electric vehicles

: Jung, M.; Seibel, A.; Steffen, J.; Lempidis, G.; Kirchhof, J.; Gaber, R.; Marklein, R.

MESAGO PCIM GmbH, Stuttgart:
PCIM Europe 2016. Proceedings. CD-ROM : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, 10 - 12 May 2016
Berlin: VDE-Verlag, 2016
ISBN: 978-3-8007-4186-1
ISBN: 3-8007-4186-5
PCIM Europe <2016, Nuremberg>
Conference Paper
Fraunhofer IWES ()

In this paper, a complete multimode (wired and wireless) charging and discharging infrastructure and their implementation in an electric vehicle are presented. The overall system management and a control strategy for increasing the efficiency are discussed. In order to increase the grid connection of an electric vehicle, a highly flexible bidirectional battery charging concept has been developed which is capable of charging 1-phase grid wired, 3-phase grid wired as well as wireless with an inductive power transfer system. Ancillary services and self-consumption are possible due to the bidirectional power flow capabilities. The multiple use of components, for saving costs and overall installed size, requires a compromise in efficiency and dimensioning of power electronic components, since they must satisfy all requirements for a bidirectional 1-phase and 3-phase wired grid connection as well as a wireless grid connection of the battery. To reduce the negative aspects by reason of over dimensioning for different charging modes, a new operating control technique will be presented to find an acceptable solution. Measurements of the efficiency and electromagnetic compatibility document the performance and electromagnetic safety of the system. A proof of concept and the system integration in an electric vehicle is demonstrated.