Self-Decoupled and Integrated Coils for Modular Multi-Transmitter Wireless Power Transfer Systems

Prasad Jayathurathnage; Yining Liu; Jorma Kyyra

doi:10.1109/TPEL.2022.3181508

Self-Decoupled and Integrated Coils for Modular Multi-Transmitter Wireless Power Transfer Systems

Prasad Jayathurathnage, Yining Liu, Jorma Kyyra

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

111 Downloads (Pure)

Abstract

The use of multiple transmitters (Tx) has been an attractive solution for enabling free-positioning wireless power transfer (WPT) in a large area. One of the key challenges in such multi-Tx WPT systems is the cross-coupling between Tx coils. This letter proposes a compact self-decoupled Tx coil solution for multi-Tx WPT systems. The measured cross-coupling between Tx coils has been reduced by 95% compared to conventional coil designs. Additionally, an integration method for a compensation inductor with the main Tx coil is proposed. Therefore, the coil design proposed in this letter facilitates creation of fully modular and scalable Tx coils for multi-Tx WPT systems. The proposed designs are experimentally verified in a laboratory prototype.

Original language	English
Pages (from-to)	12962-12967
Number of pages	6
Journal	IEEE Transactions on Power Electronics
Volume	37
Issue number	11
Early online date	2022
DOIs	https://doi.org/10.1109/TPEL.2022.3181508
Publication status	Published - Nov 2022
MoE publication type	A1 Journal article-refereed

Keywords

Coils
Couplings
Ferrites
Inductance
Inductors
Integrated coil
multi-transmitter wireless power
Prototypes
self-decoupled coils
Topology

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Self-Decoupled and Integrated Coils for Modular Multitransmitter Wireless Power Transfer SystemsFinal published version, 2.45 MBLicence: CC BY

Cite this

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title = "Self-Decoupled and Integrated Coils for Modular Multi-Transmitter Wireless Power Transfer Systems",

abstract = "The use of multiple transmitters (Tx) has been an attractive solution for enabling free-positioning wireless power transfer (WPT) in a large area. One of the key challenges in such multi-Tx WPT systems is the cross-coupling between Tx coils. This letter proposes a compact self-decoupled Tx coil solution for multi-Tx WPT systems. The measured cross-coupling between Tx coils has been reduced by 95% compared to conventional coil designs. Additionally, an integration method for a compensation inductor with the main Tx coil is proposed. Therefore, the coil design proposed in this letter facilitates creation of fully modular and scalable Tx coils for multi-Tx WPT systems. The proposed designs are experimentally verified in a laboratory prototype.",

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author = "Prasad Jayathurathnage and Yining Liu and Jorma Kyyra",

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AU - Jayathurathnage, Prasad

AU - Liu, Yining

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PY - 2022/11

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N2 - The use of multiple transmitters (Tx) has been an attractive solution for enabling free-positioning wireless power transfer (WPT) in a large area. One of the key challenges in such multi-Tx WPT systems is the cross-coupling between Tx coils. This letter proposes a compact self-decoupled Tx coil solution for multi-Tx WPT systems. The measured cross-coupling between Tx coils has been reduced by 95% compared to conventional coil designs. Additionally, an integration method for a compensation inductor with the main Tx coil is proposed. Therefore, the coil design proposed in this letter facilitates creation of fully modular and scalable Tx coils for multi-Tx WPT systems. The proposed designs are experimentally verified in a laboratory prototype.

AB - The use of multiple transmitters (Tx) has been an attractive solution for enabling free-positioning wireless power transfer (WPT) in a large area. One of the key challenges in such multi-Tx WPT systems is the cross-coupling between Tx coils. This letter proposes a compact self-decoupled Tx coil solution for multi-Tx WPT systems. The measured cross-coupling between Tx coils has been reduced by 95% compared to conventional coil designs. Additionally, an integration method for a compensation inductor with the main Tx coil is proposed. Therefore, the coil design proposed in this letter facilitates creation of fully modular and scalable Tx coils for multi-Tx WPT systems. The proposed designs are experimentally verified in a laboratory prototype.

KW - Coils

KW - Couplings

KW - Ferrites

KW - Inductance

KW - Inductors

KW - Integrated coil

KW - multi-transmitter wireless power

KW - Prototypes

KW - self-decoupled coils

KW - Topology

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JO - IEEE Transactions on Power Electronics

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Self-Decoupled and Integrated Coils for Modular Multi-Transmitter Wireless Power Transfer Systems

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Keywords

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