Open AccessInvestigation of MI between circular spiral coils with misalignments for EV battery charging
Author(s) -
Srinivasa Rao Nayak Panugothu,
Kishan Dharavath,
Annaiah Pabbathi
Publication year - 2018
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2017.0421
Subject(s) - maximum power transfer theorem , inductance , chassis , spiral (railway) , battery (electricity) , finite element method , electric vehicle , power (physics) , battery pack , electric vehicle battery , driving range , electrical engineering , wireless power transfer , computer science , computation , physics , electromagnetic coil , engineering , mechanical engineering , structural engineering , algorithm , voltage , quantum mechanics
Electric vehicles (EVs) are becoming more popular due to ever increasing concern on the environmental effects and rising gasoline prices. However, the disadvantage of EV is their driving range and charging time. This can be overcome by a simple concept as inductive power transfer, which is an emerging EV battery charging technology. In static and dynamic charging of EV, the mutual inductance (MI) plays a key role in effective power transfer. This study proposes a new analysis concept for computation of MI between circular spiral inductive coils without core, with core and chassis. The MI is computed using Neumann's approximated equation for possible misalignments such as perfect, planar and angular misalignments. The computed values of MI for the above‐mentioned alignments are verified using finite element modelling analysis and also validated through experimentation. The comparative analysis conveys that the computed values of MIs are accurate and relative error is negligible.