Serbian Journal of Electrical Engineering 2022 Volume 19, Issue 2, Pages: 129-145
https://doi.org/10.2298/SJEE2202129L
Full text ( 1173 KB)
A study on transmission coil parameters of wireless power transfer for electric vehicles
Lo Duncan Kon Wui (Department of Electrical and Computer Engineering, Curtin University Malaysia, CDT, Miri, Malaysia), duncanlo2699@gmail.com
Juwono Filbert (Department of Electrical and Computer Engineering, Curtin University Malaysia, CDT, Miri, Malaysia), filbert@ieee.org
Wong Wei Kitt (Department of Electrical and Computer Engineering, Curtin University Malaysia, CDT, Miri, Malaysia), weikitt.w@curtin.edu.my
Chew Ing Ming (Department of Electrical and Computer Engineering, Curtin University Malaysia, CDT, Miri, Malaysia), chewim@curtin.edu.my
Electric vehicles (EVs) are becoming more popular as people become more
concerned about global issues, such as fossil fuel depletion and global
warming, which cause severe climate change. Wired charging infrastructure is
inefficient because it requires the construction of one charging station for
each electric vehicle. As a result, wireless power transfer via magnetic
coupling, which is small, compact, and may be placed underground, is a
promising technology for the future of charging electric vehicles. One of
the disadvantages of wireless power transfer is that efficiency drops
rapidly as air gaps grow larger, and it is particularly sensitive to other
electrical characteristics such receiver unit capacitance. The purpose of
this paper is to investigate the coil parameter, more specifically the outer
diameter of wireless power transfer coil effects on the wireless power
transfer efficiency at various air gaps and receiver capacitance values for
EV applications. The simulations show that a larger outer diameter coil has
a better power transfer efficiency at larger air gaps and a more stable
range.
Keywords: Wireless power transfer, Electric vehicles, Air gap, Coil
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