Shielding Design for High-Frequency Wireless Power Transfer System for EV Charging With Self-Resonant Coils

被引：14

作者：

Qin, Ruiyang ^{[1
]}

Li, Jie ^{[1
]}

Sun, Jingjing ^{[1
]}

Costinett, Daniel ^{[1
]}

机构：

[1] Univ Tennessee, Min H Kao Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2023年 / 38卷 / 06期

基金：

美国国家科学基金会;

关键词：

Coils; Ferrites; Magnetic fields; Metals; Aluminum; Magnetic shielding; Inductance; Electric vehicle (EV) charging; multilayer spiral coil; self-resonant (SR) coil; shielding design; wireless power transfer (WPT); OPTIMIZATION;

D O I：

10.1109/TPEL.2023.3251990

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This article provides a complete coil and shielding design solution for a 6.6 kW electric vehicle (EV) wireless power transfer system based on compact self-resonant (SR) coils. Due to the presence of a conductive vehicle body above the receiver coil, vertical fringing flux must be shielded in any EV wireless charger. Using high-frequency SR coils, parasitic capacitance introduced by standard shielding design approaches degrades the quality factor of the coils. In this article, the high-frequency parasitic capacitance introduced by the magnetic and conductive shielding materials is analyzed in detail, and a shielding geometry optimization method is proposed. Using ferrite and an additional dielectric spacer, prototype aluminum-backed SR coils are fabricated to validate the modeling. The total thicknesses of the transmitter and receiver coils are only 11.4 and 7.4 mm, respectively. The prototype coils achieve 92.3% dc-dc efficiency and 7.1 kW/dm(3) volumetric power density. This article demonstrates the first 6.6 kW WPT system for EV charging using compact megahertz-SR coils including a complete magnetic and conductive shielding implementation.

引用

页码：7900 / 7909

页数：10

共 30 条

[21] Robust Ferrite-Less Double D Topology for Roadway IPT Applications [J].

Pearce, Matthew Geoffrey Seymour ;

Covic, Grant Anthony ;

Boys, John Talbot .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2019, 34 (07) :6062-6075

[22] A 6.6-kW High-Frequency Wireless Power Transfer System for Electric Vehicle Charging Using Multilayer Nonuniform Self-Resonant Coil at MHz [J].

Qin, Ruiyang ;

Li, Jie ;

Costinett, Daniel .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2022, 37 (04) :4842-4856

[23]

Qin RY, 2020, IEEE ENER CONV, P5487, DOI 10.1109/ECCE44975.2020.9236415

[24]

Qin RY, 2019, IEEE ENER CONV, P3333, DOI [10.1109/ECCE.2019.8913274, 10.1109/ecce.2019.8913274]

[25]

Son HC, 2011, ASIA PACIF MICROWAVE, P90

[26]

Stein ALF, 2017, APPL POWER ELECT CO, P3723, DOI 10.1109/APEC.2017.7931234

[27] Design of a Resonant Reactive Shielding Coil for Wireless Power Transfer System [J].

Sun, Jingjing ;

Qin, Ruiyang ;

Li, Jie ;

Costinett, Daniel J. ;

Tolbert, Leon M. .

2021 THIRTY-SIXTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2021), 2021, :1565-1572

[28]

Zhang B, 2020, IEEE ENER CONV, P5185, DOI 10.1109/ECCE44975.2020.9235329

[29] Loosely Coupled Transformer Structure and Interoperability Study for EV Wireless Charging Systems [J].

Zhang, Wei ;

White, Jeff C. ;

Abraham, Arpith Mathew ;

Mi, Chunting Chris .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2015, 30 (11) :6356-6367

[30] Shielding Optimization of IPT System Based on Genetic Algorithm for Efficiency Promotion in EV Wireless Charging Applications [J].

Zhao, Haisen ;

Liu, Kun ;

Li, Song ;

Yang, Fuyao ;

Cheng, Shaoyu ;

Eldeeb, Hassan H. ;

Kang, Jinping ;

Xu, Guorui .

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 2022, 58 (01) :1190-1200

← 1 2 3 →