An Inductive Power Transfer System with Multiple Receivers Utilizing Diverted Magnetic Field and Two Transmitters for IoTlevel Automatic Catering Vehicles

Automatic catering vehicles (ACVs) are increasingly adopted in restaurants to save expensive human resources. Especially in special situations such as a pandemic, ACV offers a wise choice to keep social distance. In this paper, a wireless power transfer (WPT) system is proposed to charge four ACVs a...

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Bibliographic Details
Published inIEEE transactions on magnetics p. 1
Main Authors Wang, Heshou, Sun, Jinhong, Cheng, Ka Wai Eric
Format Journal Article
LanguageEnglish
Published IEEE 23.05.2023
Subjects
Automatic vehicles
Couplings
inductive power transfer
Magnetic circuits
Magnetic cores
Magnetic fields
Magnetic flux
multiple receivers
Receivers
Transmitters
wireless power transmission
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Summary:Automatic catering vehicles (ACVs) are increasingly adopted in restaurants to save expensive human resources. Especially in special situations such as a pandemic, ACV offers a wise choice to keep social distance. In this paper, a wireless power transfer (WPT) system is proposed to charge four ACVs at the same time. With the help of ferrite cores, the flux can be guided through all four receivers while the leakage magnetic field can be reduced simultaneously. Two transmitters are utilized to confine the flux path further. Both areas #A and #B can charge UAVs with the consideration of the mechanical structure of the food preparation area and charging standby area (Areas #A and #B). The presented system can also realize zero phase angle (ZPA) to degrade the volt-ampere (VA) rating. Finally, an experimental setup is constructed, and the overall dc-dc efficiency is 87.6% when delivering 120 W to four loads.
ISSN:0018-9464
DOI:10.1109/TMAG.2023.3279407