Harmonic Current Reduction Method of Hand-Held Resonant Magnetic Field Charger (HH-RMFC) for Electric Vehicle
The hand-held resonant magnetic field charger (HH-RMFC) is a convenient equipment of charging the batteries without any electrical contact. Due to high coupling coefficient of HH-RMFC, the single phase power inverter with square wave encounter relatively small reactance at its harmonic frequencies. Thus, the current flowing through the Tx and Rx windings can be distorted. The distorted current with large amount of harmonics may act as magnetic near field noise to the adjacent sensitive electronic devices such as sensors, controller and communication devices in electric vehicles (EVs). Moreover, the current harmonics have the effect of increasing losses and thermal stress in power system. In this paper, a reduction method of the harmonic currents in HH-RMFC is proposed. The circuit simulation results show that the harmonic currents flowing through Tx and Rx windings in HH-RMFC can significantly be reduced by applying the proposed method. The circuit simulation results show that proposed method can reduces THD of Tx current and Rx current by 15.64 % and 14.11 %, respectively.
C. Song et al., "Harmonic Current Reduction Method of Hand-Held Resonant Magnetic Field Charger (HH-RMFC) for Electric Vehicle," Proceedings of the 2014 IEEE International Symposium on Electromagnetic Compatibility (2014, Tokyo, Japan), pp. 414-417, Institute of Electronics, Information and Communication Engineers (IEICE), May 2014.
2014 International Symposium on Electromagnetic CompatibiIity, EMC 2014 (2014: May 12-16, Tokyo, Japan)
Electrical and Computer Engineering
Keywords and Phrases
Magnetic Field Noise; Resonant Magnetic Field; Total Harmonic Distortion; Wireless Power Transfer
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2014 Institute of Electronics, Information and Communication Engineers (IEICE), All rights reserved.
16 May 2014