Investigation of magnetic properties for different coil sizes of dynamic wireless charging pads for electric vehicles (EV)
: Electric vehicles (EV) have been introduced in the recent years due to public awareness of the effect of gas emission from traditional cars and the extinction of petroleum natural resources. For charging EV, dynamic wireless charging is considered in this paper. This is because it is more conve...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
IIUM Press
2020
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/78516/ http://irep.iium.edu.my/78516/ http://irep.iium.edu.my/78516/ http://irep.iium.edu.my/78516/7/78516%20Investigation%20of%20magnetic%20properties.pdf http://irep.iium.edu.my/78516/8/78516%20Investigation%20of%20magnetic%20properties%20SCOPUS.pdf |
| Summary: | : Electric vehicles (EV) have been introduced in the recent years due to public
awareness of the effect of gas emission from traditional cars and the extinction of
petroleum natural resources. For charging EV, dynamic wireless charging is considered in
this paper. This is because it is more convenient and saves charging time since it charges
the electric vehicle while moving. The main challenge of this process is to maintain a high
amount of power transfer from primary to secondary coil. One of the factors contributing
to a good power transfer is the size of the coil [1]. There are various designs of coil for
wireless charging of electric vehicles (EV). Among the most common designs are circular
pad (CP), rectangular pad (RP), double-D pad (DDP), and double-D quadrature pad
(DDQP). In this paper, circular pad (CP) is chosen for use, due to its simplicity in design
and good electrical and magnetic properties. Three different coil pair sizes are tested to
find the most suitable coil pair for the primary and secondary pads that has the maximum
power transfer and is least sensitive to misalignment. The magnetic properties have been
investigated to obtain the highest value of magnetic flux. The geometry design of the pads
and simulation was done using COMSOL Multiphysics software. From the simulation, it
was found that the unsymmetrical coil pair gives high magnetic strength when the outer
diameters of the primary and secondary coils have the same value.
*************************************************************************
Kenderaan Elektrik (EV) telah diperkenalkan sejak beberapa tahun ini hasil
kesedaran awam tentang kesan pembebasan gas dari kenderaan lama dan pengurangan
sumber asli petroleum. Kajian ini berkaitan pengecas dinamik tanpa wayar bagi mengecas
EV. Ini kerana pengecas ini lebih sesuai dan jimat masa mengecas kerana kenderaan
elektrik dicas ketika bergerak. Cabaran utama proses ini adalah mengekalkan pemindahan
tenaga yang tinggi daripada gegelung primer kepada gegelung sekunder. Salah satu faktor
bagi mendapatkan pemindahan tenaga yang tinggi adalah saiz gegelung wayar [1].
Terdapat pelbagai bentuk gegelung bagi mengecas kenderaan elektrik (EV) tanpa wayar.
Antaranya adalah pad membulat (CP), pad segiempat tepat (RP), pad berganda-D (DDP),
dan pad kuadratur berganda-D (DDQP). Kajian ini telah menggunakan pad membulat (CP)
kerana reka bentuknya yang ringkas dan ia mempunyai sifat elektrikal dan magnatik yang
baik. Tiga pasang gegelung berbeza telah diuji bagi mendapatkan pasangan gegelung pad
primer dan sekunder yang paling sesuai di mana ianya mempunyai pemindahan tenaga
maksima dan paling kurang sensitif pada ketidakjajaran. Sifat magnet telah diuji bagi
mendapatkan nilai fluks magnet tertinggi. Rekabentuk geometri pad dan simulasi telah
dijalankan menggunakan perisian Multifizik COMSOL. Hasil simulasi mendapati
pasangan gegelung yang tidak simetri telah menghasilkan kekuatan magnetik tertinggi
apabila diameter luaran gegelung primer dan sekunder mempunyai nilai sama. |
|---|