Structure of Handheld Resonant Magnetic Coupling Charger (HH-RMCC) for Electric Vehicle Considering Electromagnetic Field


Inductive charging is a convenient method to transfer electrical power from a source to the batteries without any electrical contact. The problem is that inductive charging technologies may have electromagnetic compatibility (EMC) issues caused by leakage magnetic field. In this paper, an inductive charger design for electric vehicles (EVs) named as Handheld Resonant Magnetic Coupling Charger (HH-RMCC) is proposed. The air gap and thickness of the ferrite core are determined considering the core saturation and leakage magnetic field. The maximum value of the simulated magnetic flux density at the distance of 200 mm away from the charger is 2.28 mG and the simulation result of the power transfer efficiency is approximately 99.5%. The simulation results using 3D Finite Element Analysis (FEA) tool show that HH-RMCC satisfies EMF regulation published by the International Commission on Non-Ionizing Radiation and Protection (ICNIRP) at the frequency of 20 kHz with high performance.

Meeting Name

2013 IEEE Wireless Power Transfer, WPT 2013 (2013: May 15-16, Perugia, Italy)


Electrical and Computer Engineering

Keywords and Phrases

Electromagnetic Compatibility; Electromagnetic Fields; Inductive Charger; Magnetic Field Resonance

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version


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© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

16 May 2013