Study on Coil Parameters and Coupling Coefficient of Wireless Power Transfer System

CHEN Zhonghua; LU Wei; SHI Guang; ZHAO Chunyu

doi:10.13296/j.1001-1609.hva.2019.04.029

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Study on Coil Parameters and Coupling Coefficient of Wireless Power Transfer System

更新时间：2025-04-26

- Study on Coil Parameters and Coupling Coefficient of Wireless Power Transfer System
- High VoltageApparatus Vol. 55, Issue 4, Pages: 205-210(2019)
- 作者机构：
  
  辽宁工程技术大学电气与控制工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.04.029
  CLC： TM724
- Published：2019
- 稿件说明：
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[1]陈忠华,卢韦,时光,赵春雨.无线电能传输系统的线圈参数及耦合系数研究[J].高压电器,2019,55(04):205-210.

CHEN Zhonghua, LU Wei, SHI Guang, et al. Study on Coil Parameters and Coupling Coefficient of Wireless Power Transfer System[J]. High voltageapparatus, 2019, 55(4): 205-210.
[1]陈忠华,卢韦,时光,赵春雨.无线电能传输系统的线圈参数及耦合系数研究[J].高压电器,2019,55(04):205-210. DOI： 10.13296/j.1001-1609.hva.2019.04.029.

CHEN Zhonghua, LU Wei, SHI Guang, et al. Study on Coil Parameters and Coupling Coefficient of Wireless Power Transfer System[J]. High voltageapparatus, 2019, 55(4): 205-210. DOI： 10.13296/j.1001-1609.hva.2019.04.029.

摘要

磁耦合谐振无线电能传输影响系统耦合系数的主要因素是线圈参数。对于空间两线圈的互感模型

由诺依曼理论推导出发射、接收线圈间的互感系数表达式;通过建立有限元仿真模型对收发线圈进行电磁场仿真计算

针对线圈结构进行优化设计

进一步分析载流线圈的绕制结构、尺寸参数、空间位置等因素对互感耦合系数的影响。采用层绕式螺旋管结构线圈能提高传输系统耦合效率

增大发射线圈尺寸使其大于接收线圈尺寸有利于提高耦合性能。

Abstract

The coil structure of the Magnetic Coupling Resonance Wireless Power Transmission System is the main factor that directly affects the coupling coefficient. Firstly

the expression of the coupling coefficient between the transmitter and receiver is derived by using the Neumann’s formula

and the mutual inductance model

which is based on two coils

also been constructed. Secondly

the finite element emulator model is established to study the magnetic field of transmitting and receiving coils. Then the varying regularity of the mutual inductance is verified by simulating the system operation under different conditions such as structure parameters and space position of the coils. Using spiral coil or increasing the radius of the transmitting coil is helpful to improve the coupling performance of the system.

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