Open AccessAnalysis and optimization of a solenoid coupler for wireless electric vehicle charging
Author(s) -
Katharina Knaisch,
Tom P. Huck,
Peter Gratzfeld
Publication year - 2016
Publication title -
wireless power transfer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.275
H-Index - 11
ISSN - 2052-8418
DOI - 10.1017/wpt.2016.11
Subject(s) - solenoid , wireless power transfer , electromagnetic coil , electrical engineering , coupling coefficient of resonators , maximum power transfer theorem , inductance , engineering , coupling (piping) , wireless , standardization , interoperability , magnet , power (physics) , electric vehicle , computer science , mechanical engineering , telecommunications , physics , resonator , quantum mechanics , voltage , operating system
In light of the increased interest in e-mobility, comfortable, and safe charging systems, such as inductive charging systems, are gaining importance. Several standardization bodies develop guidelines and specifications for inductive power transfer systems in order to ensure a good interoperability between different coil architectures from the various car manufacturers, wireless power transfer suppliers, and infrastructure companies. A combination of a bipolar magnetic coil design on the primary side with a secondary solenoidal coil promises a good magnetic coupling and a high-transmitted power with small dimensions at the same time. In order to get a profound knowledge of the influence and behavior of the main variables on the coil system, a detailed parameter study is conducted in this paper. Based on these findings, a solenoid was designed for a specific case of application. Further, this design is optimized. The dimensions of the system could be reduced by 50% with a constant coupling factor at the same time. Besides the reduction of the dimensions and subsequently the costs of the systems, the stray field could be reduced significantly.