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http://dx.doi.org/10.4283/JMAG.2013.18.2.105

Estimation of Output Voltage and Magnetic Flux Density for a Wireless Charging System with Different Magnetic Core Properties  

Park, Ji Hea (Clean Energy Research Center, Korea Institute of Science and Technology (KIST))
Kim, Sang Woo (Clean Energy Research Center, Korea Institute of Science and Technology (KIST))
Publication Information
Journal of Magnetics / v.18, no.2, 2013 , pp. 105-110 More about this Journal
Abstract
The design model and key parameters of the material design for the control of induced magnetic flux at the near-field and efficient power transfer in a modified wireless power transfer (WPT) system with a large air gap of wireless electric vehicles were investigated through analytical simulations for magnetic vector and time-domain transient analysis. Higher saturation magnetic core with low core loss induced a stronger vertical magnetic field by the W-type primary coil in the WPT system with a gap of 20 cm at 20 kHz, which is shown from the vector potentials of the magnetic induction. The transient analysis shows that the higher magnetic fluxes through the pick-up cores lead to a linear increment of the alternating voltage with a sinusoidal waveform in the non-contact energy transfer system.
Keywords
wireless power transfer; online electric vehicle (OLEV); electromagnetic field (EMF); magnetic core; output voltage; maxwell simulation;
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