TY - JOUR
T1 - Separation-Misalignment Insensitive WPT System Using Two-Plane Printed Inductors
AU - Alshhawy, Shimaa
AU - Barakat, Adel
AU - Yoshitomi, Kuniaki
AU - Pokharel, Ramesh K.
N1 - Funding Information:
Manuscript received July 21, 2019; accepted August 12, 2019. Date of publication August 30, 2019; date of current version October 7, 2019. This work was supported by the VLSI Design and Education Center (VDEC), The University of Tokyo, in collaboration with Keysight Corporation and a scholarship from Rotary Yoneyama Memorial Foundation and JSPS International Fellowship. (Corresponding author: Shimaa Alshhawy.) The authors are with the Graduate School of Information Science and Electrical Engineering, Kyushu University, Fukuoka 819-0385, Japan (e-mail: shimaa8512@gmail.com; eng.adeltawfik@gmail.com; yoshitomi@ed.kyushu-u.ac.jp; pokharel@ed.kyushu-u.ac.jp).
Publisher Copyright:
© 2001-2012 IEEE.
PY - 2019/10
Y1 - 2019/10
N2 - This letter presents a separation-misalignment insensitive wireless power transfer (WPT) system. This insensitivity is possible by minimizing the variation of mutual inductance. The transmitter (TX) of the proposed WPT system uses a two-plane printed inductor, and the receiver (RX) is a single-plane one. The TX encloses the RX to achieve minimal mutual inductance variations. Hence, the lost mutual inductance due to the misalignment between the RX and one of the TX inductors is compensated by getting close to/moving away from the other TX inductor. Furthermore, admittance inversion and compensation networks are designed to compensate for the remaining variations. Then, we design and fabricate a prototype at 50 MHz. Each TX inductor has an area of 50 text {mm} × 50 mm and an initial separation of 30 mm from the 25 text {mm} × 25 mm RX. The measured efficiency ranges between 72.5% and 80.5% for the separation of ±20 mm from the initial position.
AB - This letter presents a separation-misalignment insensitive wireless power transfer (WPT) system. This insensitivity is possible by minimizing the variation of mutual inductance. The transmitter (TX) of the proposed WPT system uses a two-plane printed inductor, and the receiver (RX) is a single-plane one. The TX encloses the RX to achieve minimal mutual inductance variations. Hence, the lost mutual inductance due to the misalignment between the RX and one of the TX inductors is compensated by getting close to/moving away from the other TX inductor. Furthermore, admittance inversion and compensation networks are designed to compensate for the remaining variations. Then, we design and fabricate a prototype at 50 MHz. Each TX inductor has an area of 50 text {mm} × 50 mm and an initial separation of 30 mm from the 25 text {mm} × 25 mm RX. The measured efficiency ranges between 72.5% and 80.5% for the separation of ±20 mm from the initial position.
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U2 - 10.1109/LMWC.2019.2935621
DO - 10.1109/LMWC.2019.2935621
M3 - Article
AN - SCOPUS:85077500541
SN - 1531-1309
VL - 29
SP - 683
EP - 686
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 10
M1 - 8821558
ER -