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Open AccessArticle
Optimization of Magnetic Core Structures for Enhanced Magnetic Coupling in Helical Coil Inductive Power Transmission
by
Ho-Yeong Lee
Ho-Yeong Lee 1,
Seung-Ahn Chae
Seung-Ahn Chae 1,
Min-Seung Song
Min-Seung Song 1 and
Gwan-Soo Park
Gwan-Soo Park 1,2,*
1
Department of Electrical Engineering, Pusan National University, Busan 46241, Republic of Korea
2
Robotics Institute of Non-Destructive Inspection, Pusan National University, Busan 46241, Republic of Korea
*
Author to whom correspondence should be addressed.
Energies 2024, 17(15), 3711; https://doi.org/10.3390/en17153711 (registering DOI)
Submission received: 21 June 2024
/
Revised: 8 July 2024
/
Accepted: 25 July 2024
/
Published: 27 July 2024
Abstract
Inductive power transfer (IPT) systems often encounter limitations in efficiency and transmission distance due to near-field magnetic coupling characteristics. Increasing the inductance can enhance the transmission distance, but it also raises the system’s Q factor, leading to several issues. This study aimed to optimize the magnetic core design of helical coils to enhance magnetic coupling in IPT systems while minimizing the increase in self-inductance. Through finite element analysis, various core placements were evaluated, leading to a proposed core design process that integrates inner and lower cores at optimal angles. The proposed design was compared with conventional cores, and its performance was validated in an IPT system. The results demonstrate that the proposed core design significantly enhances the coupling coefficient (k) and extends power transmission distance compared with conventional planar and U-shaped core structures without substantially increasing self-inductance (L). This design effectively balances the trade-off between increasing inductance and maintaining system stability, thereby improving transmission efficiency while minimizing frequency instability and voltage stress.
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MDPI and ACS Style
Lee, H.-Y.; Chae, S.-A.; Song, M.-S.; Park, G.-S.
Optimization of Magnetic Core Structures for Enhanced Magnetic Coupling in Helical Coil Inductive Power Transmission. Energies 2024, 17, 3711.
https://doi.org/10.3390/en17153711
AMA Style
Lee H-Y, Chae S-A, Song M-S, Park G-S.
Optimization of Magnetic Core Structures for Enhanced Magnetic Coupling in Helical Coil Inductive Power Transmission. Energies. 2024; 17(15):3711.
https://doi.org/10.3390/en17153711
Chicago/Turabian Style
Lee, Ho-Yeong, Seung-Ahn Chae, Min-Seung Song, and Gwan-Soo Park.
2024. "Optimization of Magnetic Core Structures for Enhanced Magnetic Coupling in Helical Coil Inductive Power Transmission" Energies 17, no. 15: 3711.
https://doi.org/10.3390/en17153711
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